Chapter 2 P2 Section A

8/6/2019 Chapter 2 P2 Section A

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FIZIKMOZAC 2010FORCES AND MOTION2.1LINEAR MOTIONQuestion 1: Melaka Mid 08Ali walks to the north for a distance of300 m. He then turns west and walksfor another distance of 400 m to reach

Pak Kassims stall.Diagram 1 shows the path taken by Ali.Diagram 1(a) Distance is a Tick (v) the correct answer in thebox belowScalar quantityVector quuantity(b) On Diagram 1, mark an arrow toshow the displacement made by Ali(c) What is the total distance travelledby Ali?

............................................................(d) Ali then walks home for anotherdistance of 500 m. What is the totaldisplacement made by Ali...............................................................xv) [1 mark]...............................[1 mark][1 mark]Question 2: MRSM 07Diagram 2.1 shows an experimental setup where a ticker timer is used to study

the type of motion for a trolley movingdown a friction-compensated runway.The frequency of the ticker timer is 50Hz.Diagram 2.1(a) State the type of current used bythe ticker timer.(b) Diagram 2.2 shows a strip of tickertape obtained from the motion ofthe trolley.Diagram 2.2(i) What is the time interval

between two consecutivedots?(ii) State the type of motion of thetrolley(iii) Calculate the velocity of thetrolley.setupuency [1 mark][1 mark][ 1 mark]


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FIZIKMOZAC 2010[2 marks]Question 3Diagram 3 shows a strip of ticker tapewhich is produced by an moving objectthrough a ticker-timer of frequency 50

Hz.Diagram 3(a) State the type of current used bythe ticker-timer.(b) Draw a tape chart for the motionof the object.(c) Describe the state of motion insituation (b).(d) Calculate the average velocityfor:(i) the first 10 ticks(ii) the last 10 ticks

(e) Calculate the acceleration of themotion of the bus.(f) Calculate the total displacementby the situation.2.2MOTION GRAPHQuestion 4(a) Figure 4.1 shows a displacementtime graph of an object.Figure 4(i) State the physical quantitywhich represents the gradientof the graph.(ii) Calculate the gradient of the

graph, m.(b) Figure 4.2 shows a graph of velocityv against time t..1 displacementtime4.1


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FIZIKMOZAC 2010Diagram 4.2(i) State the physical quantitywhich represents the gradientof the graph.(ii) Calculate the gradient of the

graph.(iii) Calculate the total distancetraveled by the object.Question 5: Trial Melaka 08Diagram 5.1 shows a velocity-timegraph for a toy car.Diagram 5.1(a) What is meant by velocity?.(b) On Diagram 3.1 mark with R aregion with zero acceleration..

(c) Based from Diagram 3.1 ,Calculate(i) The acceleration of the car.(ii) Displacement made by thetoy car in 20 secondsQuestion 6Diagram 6 shows the distancegraph for the motion of a runner who isrunning along a straight line.Diagram 6(a) Based on Diagram 6distance travelled by the runner after10 s?

...............................................................

.(b)What physical quantity is giventhe gradient of the graph in Diagram6?[1 mark][1 mark][ 2 marks][2 marks]distance-time, what is the[1 mark]by


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FIZIKMOZAC 2010................................................................(c) Describe the motion of the runner,(i) from A to B..............................................................

(ii)from B to C...........................................................Question 7Diagram 7 shows the graph of velocityagainst time for the motion of a car.Diagram 7(a) State the physical quantityrepresented by(i) the gradient of the graph........................................................[1 mark](ii) the area under the graph.

[1 mark][1 mark][1 mark]........................................................(b) Complete the table below.Section of thegraphType of motion ofOAABQuestion 8: SBP 07Diagram 8.1 shows a car driven by akidnapper has overtook a police car at

2.00 p.m. The police car then followedthe kidnappers car.Diagram 8.2 shows a velocity againsttime graph for both cars.(a) Based on graph in Diagram 8state the motion of the(i) kidnappers car[1 mark][1 mark]e the car[2 marks].1 .2 8.2,[ 1 mark ]


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FIZIKMOZAC 2010(ii) police car...........(b) (i) What is the net force acting onthe police car after 2.01 p.m?................................................................

(ii) Give a reason for your answerin 3(b)(i).................................................................(c) Sketch a displacement against timegraph of the police car.2.3 INERTIA2.4MOMENTUMQuestion 9Diagram 9.1 shows a trolley P movingwith a constant velocity, u, collide witha stationary trolley Q of mass 2 kg.After collision, the two trolleys stuck

together and move with a final velocity,v. the motion of the two trolleys isrecorded by a ticker tape attached tothe trolley P and passing through aticker tape timer having a frequency of50 Hz.[ 1 mark ][ 1 mark ][ 1 mark ].1 ached Diagram 9Diagram 9.2 shows the dots on theticker tape produced by the two trolleysbefore and after the collision.

Diagram 9.2(a) Name the type of collisioin this situation.(b)What is the velocity of trolley Pbefore collision?(c) What is the total momentum beforecollision?(d)What is the final velocity of thecombined trolleys P and Q?(e) Determine the mass of trolley Q.Question 10: Melaka F4 08Diagram 10 shows a cannon of mass,M,1200 kg fires a cannonball of mass,m, 4kg. The speed of the cannonball as itleaves the cannon is 60 ms9.1.2 collision involvedms-1.


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FIZIKMOZAC 2010Diagram 10(a) What is meant by mass?............................................................(b) Base on Diagram 10(i) What is the relation between the

backward momentum and theforward momentum.........................................................(ii) Write the equation to show therelationship in (b)(i) ?.......................................................(iii) Name the physics principleinvolved in the explosion........................................................(c) Calculate the initial velocity of therecoil cannon when the cannonballis fired.

[2 marks]Question11 (SPM 2004)Diagram 11 shows a man standing on astationary boat. He then jumps out ofthe boat onto the jetty. The boat movesaway from the jetty as he jumps.[1 mark][1 mark][1 mark][1 mark]nitial Diagram 11(a) State the physics principle that isinvolved in the movement of the boat

as the man jumps onto the jetty._______________________________(b) Explain why the boat moves awayfrom the jetty when the man jumps._____________________________________________________________(c) The mass of the man is 50 kg and hejumps at a velocity of 2 msmass of the boat is 20 kg. Calculatethe velocity of the boat as the manjumps.(d) Name one application of tprinciple stated in (a) in anexploration of outer space.____________________________Question 12: MRSM 08Diagram 12 shows a softball movingwith high momentum.[1 m][1 m]ms-1. The[2 m]the physics_______________________________[1 m]


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FIZIKMOZAC 2010Diagram 12(a) What is meant by momentum?.....................................................[1 mark](b) Calculate the momentum of the

softball if the mass of the ball is80 g and its velocity is 100 ms(c) If the mass of the ball isincreased but its momentumremains unchanged, how does itsvelocity change?.....................................................[1 mark](d) Using the concept of force,explain why the player needs towear a glove to catch a fastmoving softball.

....................................................[1 mark]Question 13: Melaka Mid 08Diagram 13.1 shows a lorry of mass1200 kg moving at the speed of 30 m/scollides with a car of mass 1000 kgwhich is travelling in the oppositedirection at 20 m/s. After thecollision, the two vehicles movetogether.............................ms-1.[2 m]

f ...........................ar fast-..........................Diagram 13(a) State the type of collisioninvolved in this accident...........................................................(b) Calculate the velocity, v of bothvehicles immediately aftercollision.(c) The driver of the car is thrownforward during the collision.State the physics conceptinvolved...........................................................(d) The speed limit and the load limitof a truck is shown in Diagram13.2.13.1[1 mark]diately [2 marks][1 mark]


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FIZIKMOZAC 2010Diagram 13(e) Explain why the speed limit andthe load limit must be imposed onthe truck..........................................................

.........................................................

.........................................................2.5 FORCES2.6 IMPULSIVE FORCE & IMPULSEQuestion 14: Kedah 07Diagram 14.1 and Diagram 14.2 showtwo eggs released from the same heightand drop on to Surface A and Surface Brespectively.Diagram 14.1 Diagram 14(a) What is meant by impulse?...................................................................

(b) With reference to Diagram 14.1 andDiagram 14.2;13.2[2 marks].2 14.2[1 mark](i) Compare the force on the eggsthat strike Surface A and SurfaceB...........................................................(ii) Compare the time of impact ofthe eggs on Surface A andSurface B.

...............................................................(iii) Compare the change inmomentum of the eggs in bothsituations................................................................(iv) State the relationship betweenthe force produced in a collisionand the time of impact...........................................................(v) Suggest a suitable material forSurface A................................................................(c) Diagram 14.3 shows a pile hammerused in driving a pile into the groundat a construction site.[1 mark][1 mark][1 mark][1 mark][1 mark]


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FIZIKMOZAC 2010Explain how a large force is producedby the pile hammer in driving the pileinto the ground....................................................................................................................................

.................................................................Question 15: Melaka 09A boy with mass 50 kg climbs up a 2.5m wall from the ground level and jumpdown as shown in Diagram 15Diagram 15(a) (i) Name the energy gained by theboy before the jump?......................................................(ii) State the energy changeexperienced by the boy beforethe leg hit the ground.

[2 Marks]15.......................................................(a) Based on the information given onDiagram 15, calculate(i) the speed of the boy just beforehis legs touch the ground.(ii) the impulsive force producedwhen the time of action betweenhis legs and the ground is 0.03 s.(c) Impulsive force can caused severedamage. Suggest a method toreduce the impact of the impulsive

force in eggs drop competitionfrom a height during a sciencecarnival. .Your answer should bfollowing criteria(i) The eggs casing..................................................Reason.................................................(ii) Method for soft landing....................................................Reason....................................................Question 16 (SPM 2009) Q2Diagram 16 shows an egg beingdropped onto a wooden block. The eggcracks after an impact. The velocity ofthe egg just before the impact is 5 mslate) base on the...............................[ 2 marks]:[ 2 markah ]ms-1.


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FIZIKMOZAC 2010Diagram 16(a) Name the force involved during theimpact...............................................................(b) Give one reason why the egg

cracked after the impact...............................................................(c) The mass of the egg is 0.05 kg.Calculate the momentum just beforethe impact.(d) Give one suggestion how youwould avoid the egg from crackingwhen dropped from the sameheight...............................................................2.8 Gravitational ForceQuestion 17 (SPM 2003)

[1 m][1 m]ass [2 m][1 m]Figure 17 is a stroboscopic photographshows two steel balls in a state of freefall. Both balls are droppedsimultaneously from the same height..Diagram 17(b) Observe the photograph and statetwo similarities between the positionof the balls._______________________________

_______________________________(c) Name one physical quantity whichcauses the balls to fail._______________________________(d) Based on the positions of the freefalling balls, there is a physicalquantity that is constant.(i) Name the quantity._____________________________(ii) What is the value of the quantityand its unit?___________________freefall.[2 m][1 m]freefallinghat [1 m]_____________________________[ 1 m]


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FIZIKMOZAC 2010(iii)State how the mass of a ballaffect the valued of the physicalquantity stated in (c)(i)._____________________________(e) A ball is thrown vertically upwards at

a certain velocity.(i) What happens to the motion ofthe ball as it moves upwards?_____________________________(ii) Give one reasons for youranswer._____________________________Question 18 (SPM 2004)Figure 18.1 shows a feather and a waterdroplet falling from the same height.The mass of the feather and waterdroplet is the same and both are

dropped simultaneously at time t = 0.Figure 18.1[1 m][1 m][1 m ].1 Figure 18(a) Name one force acting on thefeather and the water droplet._____________________________(b) Using Figure 18.1, compare thesurface area of the feather andthe water droplet._____________________________

(c) Using Figure 18.1 and 18compare the changes in velocityof the feather and the waterdroplet._______________________________________________________________________________________(d) Using your answers in (b) and (c),state the relationship between therelationship between the surfacearea and the final velocity._____________________________(e) The feather and the water dropletare dropped in a vacuum. Sketcha velocity-time graph to show themotion on both objects.18.2[1 m].1, [1 m]18.2,[3 m]________________________[1 m]


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FIZIKMOZAC 20101.9 EQUILLIBRIUM OF FORCESQuestion 19 SPM 1993Two forces with magnitudes 3 N and 4N act on an object Y as shown if Figure18. The object Y is placed on a smooth

horizontal surface.4 N3 NFigure 18(a) By drawing a scaledparallelogram of forces todetermine the resultant force onthe object Y.(b) If the mass of object Y is 2.0 kg,calculate its acceleration resultedfrom the resultant force.[2 m]

. (c) State the direction and magnitudeof a force that has to be appon the object Y so that the objectis in equilibrium._____________________________Question 19: SPM 2008Diagram 19.1 shows two boys pushinga large box. After some time, the boxstill remains stationary.Diagram 19.2 shows anmoving forward with a uniformvelocity at a constant height.(a) Based on the situation in Diagram

19.1 and situation in Diagram19.2,(i) state similarities about themagnitudes and directions ofthe forces F1 and Fmagnitudes : applied: Q5.1 .2 aircraftF2 , F3 and F4 ...................


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FIZIKMOZAC 2010directions : ................(ii) What is the net force in bothsituations?(iii)Based on the answers in 5(a)(i)

and 5(a)(ii), name the physicsconcept involved.(b) (i) Another aircraft has Fthan F4 . Describe the motionof this aircraft.(ii) Explain the answer in 5(b)(i).....

Question 20 (SPM 1996)Figure shows a cyclist is riding along aroad at a constant velocity. The total ofdownward force acting on the bicycleand the cyclist is 650 N. The normalreaction of the front tyre is 300 N andforward thrust is 200 N.[2 marks][1 mark][1 mark]F3 greater[1 mark][2 marks]

(a) Calculate the normal reaction ,Pacting on the rear tyre .(b) Give one reason why the totalresistance, Q should be 200 Nat that moment?(c) What will happen when theforward thrust is increased?(d) Why the cyclist thrown forwardwhen the bicycle runs over astone.?(e) Explain why the cyclist cangets serious injuries if he fallsinto the road which the surfaceis very hard.


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FIZIKMOZAC 2010Question 21 (SPM 2005)A student studies the effect of themovement of a lift on the readings of aweighing scale. The mass of the studentis 50 kg.

In this study, the student stands on aweighing scale in a lift as show in thefollowing figure.He records the readings of the weighingscale when the lift is at rest, moving upwith acceleration, moving up withuniform velocity, moving down withuniform velocity and moving down withdeceleration.The readings of the weighing scale inthe study are shown in the followingtable.

Movement of the lift Readingof theweighingscale/ kgAt rest 50Moving up withacceleration60Moving up withuniform velocity50Moving down withuniform velocity

50Moving down withdeceleration60(a) The mass of the student is 50 kg.What is the weight of the student innewtons?. N(b) State two types of movement ofthe lift when the reading on theweighing scale is equal to the massof the student.1...2..(c) F is the resultant force that acts onthe student.R is the normal reaction of theweighing scale on the studentm is the mass of the studentg is gravitational accelerationWrite a general equation to showthe relationship between F, R, mand g.(d)When the lift moves up with

acceleration , the normal reactionis greater than his weight. Explainwhy ?


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(e) (i) What is observed on thereading of the weighing scalewhen the lift moves down with anacceleration?

(ii)Give a reason for your answer in(e)(i).


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FIZIKMOZAC 2010Question 22: MRSM 07Diagram 22 shows a student pulling abag with a force F of 120 N.Figure 22(a) What is meant by force?

..............................................................(b) On Figure 3, mark and label thehorizontal component FX and thevertical component FY of the force F.(c) Calculate the magnitude of FFy.(i) Fx(ii) Fy[4 marks]Question 23: SBP F4 08Diagram 23 shows a truck pulling a carwith a cable. The cable is at an angle of

600 to the horizontal.The force, F, of the cable is 1500 N.[1 mark]Fx and(a) What is meant by force?.........................................................................................................................(b) On Diagram 4, draw the horizontalcomponent, Fx and the verticalcomponent Fy for F.In your drawing show the directionof Fx and Fy.(c) Calculate the magnitude of the

horizontal component, F(d) What is the effect of the componentof forces, Fx and Fycar?(i) Fx : ......................................................(ii) Fy : ......................................................Question 24: N9 08Diagram 24 shows Nadia standing on aweighing scale in a lift with Farahstanding beside her.....................................[1 mark][2 marks]Fx.[2 marks]y to the towed[2 marks]


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FIZIKMOZAC 2010The reading of the weighing scaleobserved by Farah is 50 kg when the liftis stationary.(a) What is Nadias weight?..........................................................

(b) How is the reading of the weighingscale when the lift(i) accelerates upward.................................................(ii) accelerates downward................................................(iii) moves downward withconstant velocity..............................................(c) Give reasons for your answer in(b)(iii)..........................................................

(d) If the reading of the weighing scalein Diagram 4 is 46 kg, find the valueof the acceleration of the lift.Question 25: Melaka 08[1mark][1 mark]celerates [1 mark][1mark][1 mark]Diagram 25.1 and Diagramtwo situations of action and reaction offorces F1 and F2, F3 and FDiagram 5.1 remains stationary while

the car in Diagram 25.2 moves atuniform velocity of 20 ms(a) Name the force applies by theathlete on the rope.............................................................(b) Based on Diagram(i) Compare the forces of F........................................................(ii) State a similarity between thepairs of forces FDiagram 25.1 and forces of Fand F4 on Diagram........................................................(c) (i) Based on Diagramthe nett force exerted on therope?.......................................................1 25.2 showF4. The rope in5.2 ms-1.[1 mark]25.3,F1 and F2[1 mark]F1 and F2 on

5.1 F325.2,[1 mark]


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25.1, what is[1 mark]


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FIZIKMOZAC 2010(ii) Compare the net force exertedin Diagram 5.1 and Diagram5.2....................................................[1 mark]

(d) Based on your answers in (c)(i) and(c)(ii) , relate the situations inDiagram 25.1 and Diagram 25.2 tothe net force...........................................................................................................................[2 mark](e) Name the phenomenon shown inDiagram 25.1 and Diagram 25.2..........................................................[1 mark]Question 26(SPM 2000)

Figure 4 shows a high jump athlete ofmass 60 kg jumping over the bar ofheight 5.0 m. I,J, K, L, M, N, O, P and Qshow the different stages of the jumpmade by the athlete. The height of theathlete from the level of the bar is 0.2 m.Figure 4(a) Why is the athlete required toaccelerate to a certain velocity at thestage of J to K before he begins tojump?(b) Explain why the pole has to be bendat L.

(c) Calculate gravitational potentialenergy of the athlete.(d)What is the acceleration of theathlete at stage P?(e) Why is a rubber mattress placed inthe area where the athlete lands?Question 27 (SPM 2007 paper 2 A4)Diagram 27 shows a worker lifting aload of mass 20 kg using a pulleysystem. The worker applies a force of220 N to pull the rope down a distanceof 0.5 m. The load is raised to a heightof 0.5 m.


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FIZIKMOZAC 2010(a) What is meant by work?_____________________________(b) Calculate the work done(i) by the worker to pull the ropedown a distance of 0.5 m.

(ii) on the load to raise to a heightof 0.5 m.(c) (i) Compare the work done in4(b)(i) and 4(b)(ii).____________________________(ii) state why there is a differencebetween the work done in 4(b)(i)and 4(b)(ii)._____________________________2.10 WORK & ENERGYQuestion28: Melaka Mid 08Diagram 28 shows a boy of mass 30 kg

sitting on the top end of an inclinedsliding board at a height of 2.5 m fromthe ground. The boy slides down theinclined board with the velocity of 4ms-1 before he touches the ground.Diagram 28(a) Name the energy gainedboy at point P.........................................................(b) Calculate the energy consumesby the boy:(i) At point P.(ii) At point Q.

(c) (i) Compare the energyconsumes in28(b) (ii)....................................................(iii) State why there is adifference between theenergy consumes in28(b)(i) and 28..................................................by the[1 mark][2 marks][2 marks]28(b) (i) and[1 mark](28(ii)[1 mark]


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FIZIKMOZAC 2010Question 29: Perak 07Diagram 29.1 and Diagram 29.2 show astudent throwing a javelin event usingdifferentthrowing techniques.

The forces used by the student are thesame. The angles of projection aredifferent.(a) Observe Diagram 29.1 and Diagram29.2.(i) Compare the distance of thejavelin travel from A to B.......................................................(ii) What happens to distance of thejavelin thrown when the angle ofprojection is less than the angleof projection as shown in the

Diagram 29.2?.......................................................(b) State the shape of the javelin sothat it moves with minimumresistance through air...........................................................(c) The force which acts on thejavelin is 10 N and the thdistance 70 m, calculate the work.2 .1 [1 mark]appens [1 mark][1 mark]thrown

done by the student in Diagram29.2.(d) (i) State the changes of energyexperienced by the javelinfrom A to B in bothtechniques........................(ii) State the energy producewhen the javelin touches theground.....................................................Question 30: Johor 09Diagram 30.1 shows two identicaltrolleys P and Q on a frictionlesshorizontal runway. Trolley P is loadedwith steel bars.Diagram 30.1A horizontal force of 10 N acts on trolleyP and Q.(a) (i) Trolley Q moves faster thantrolley P. Explain yourobservation..........................................................(ii) State the physical law thatexplains your answer in (a)(i).

...............................................[2 marks]..................................................


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[1 mark][1 mark].1 [1 mark]........................................................[1 mark]


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FIZIKMOZAC 2010(b) Trolley Q then moves down thefrictionless slope as shown inDiagram 30.2. There is airresistance acting on the trolleywhen it moves down the slope.

On the Diagram 30.2, when the trolley Qis moving down the frictionless slopelabel,(i) The direction of the force dueto gravity(ii) The direction of the force dueto air resistance(c) State the effect of the airresistance to the motion of tQ along frictionless slope inDiagram 30.2..........................................................

(d) Compare the motion of trolley Q atthe frictionless slope and the roughsurface...........................................................(e) (i) The mass of trolley Q is 500 g.Calculate the gravitationalpotential energy of trolley Q, atthe top of the slope.(ii) The kinetic energy of the trolleyQ at the top of the slope is 3.0 J.Calculate the total energy of thetrolley..2. .2, [2 marks]

trolley[1 mark]...............................................[1 mark][2 marks]2.11 ELASTICITYQuestion 31 (SPM 2004)Diagram 31 shows the arrangement ofan apparatus in an experiment todetermine the relationship between theextension e of a spring T with weight W.The relationship of e with W ithe graph in Diagram 31Figure 31(a) (i) State the SI unit of weight.(ii) State the relationship between eand W.(iii)Name the scientific law involvedin the relationship stated in (a)(ii).(b) (i) What is the elastic limit of aspring.(ii) Mark with a cross (x) the elasticlimit of the spring on[3 marks]is shown in

31.131.1the graph.


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FIZIKMOZAC 2010(c) Based on the graph in figure 14.1,determine the force constant of aspring, k,.(d) The spring stores energy when it isextended. Calculate the energy

stored in the spring when it isextended by 4 cm.(e) Another spring, identical to spring T,is added to the arrangement inFigure 2.1. This new arrangement isshown in Figure 2.2. The experimentis then repeated.Diagram 31.2Sketch the graph of x against F for thisexperiment in Diagram 31.1.Question 33: Kedah 09Diagram 33 shows the graph of force

against extension for three springs P, Qand R.(a) (i) A law states that the extension ofa spring is directly proportionalto the force applied if the elasticlimit of the spring is notexceeded. Name this law.........................................................(ii) On the graph in Diagram 33X at the elastic limit for eachspring.(b) The spring stores energy when it isextended.

(i) Name the energy stored in thespring when it is extended.........................................................(ii) Calculate the energy stored inspring R when its extension is8.0 cm..............................................[1 mark]33, mark[2 marks][1 mark][3 marks]


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FIZIKMOZAC 2010(c) The springs are to be used in aNewton balance to measure amaximum load of mass 8 kg.(i) What is the maximum weight ofthe load?

.....................................................[1 mark](ii) Which spring is the mostsuitable to be used in theNewton balance. Explain youranswer.......................................................[2 marks]


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Chapter 2 P2 Section A

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Transcript of Chapter 2 P2 Section A