W2

T

Question 1Question-1

W1

W2Yaxis

W1

XaxisX axis

SolutionSolutionFree body diagrams of W1 and W2 arFreebodydiagramsofW1andW2ar

T T

W1Freebodydiagramforblock1

re as following:reasfollowing:

W2b d d f bl kFreebodydiagramforblock2

Equilibrium equationsEquilibrium equationss for block 1s for block 1

Equilibrium equationsEquilibrium equationss for block 2s for block 2

Question 2Question 2

Solutions:Solutions:-eebodydiagramsofW1andW2areasfollowing:

Freebodydiagramforblock1y g

Freebodydiagramforblock2

Equilibrium equationsEquilibrium equationss for block 1s for block 1

Equilibrium equationsEquilibrium equationss for block 2s for block 2

Question 3Question 3

T bl k f i ht W1 100TwoblocksareofweightW1=100andsupportsonitstopanotherblweightW2isattachedbyaninclineg yFindthemagnitudeofthehorizontblocktocauseslippingtoimpend.contact surface is 0 3contactsurfaceis0.3

3

4

3

00N t h i t l f00NrestsonahorizontalsurfaceockofweightW2=250N.TheedstringABtotheverticalwall.gtalforcePappliedtothelowerThecoefficientoffrictionforall

P

SolutionSolutionFreebodydiagramsofW1andW2ar

T

Freebodydiagramforblock2

reasfollowing:

P

Freebodydiagramforblock1

Equilibrium equationsEquilibrium equationss for block 2s for block 2

T

Equilibrium equationsEquilibrium equationss for block 1s for block 1

P

Free body diagram for block 1Freebodydiagramforblock1

Question 10Question-10

Wh t i th l f P i th tWhatisthevalueofPinthesystemimpend?Assumetheepulleyissmbetweentheothercontactsurface

h t th ti tmshowntocausethemotiontomoothandcoefficientoffrictionesis0.2

P

500N

P

IntroductionIntroduction Basic terms:Basicterms:

Motion :Abodyissaidtobeinmotionifitischangingitspo

DistanceandDisplacement :Distanceisthetotallengthofpathcoveredbythecalar quantitycalarquantity.Displacementisthelineardistancebetweenthepthasmagnitudeanddirectionthusitisvectorqua

peedandVelocity:peedisdefinedastherateofchangeofdistanceV l it i d fi d th t f h f di lVelocityisdefinedastherateofchangeofdisplace

to Dynamicsto Dynamics

ositionwithrespecttoareferencepoint.

bodytoreachfrompointAtopointB.Itisa

ointAandpointB.antity.

withtime.Speedisscalarquantity.t ith ti V l it i t titementwithtime.Velocityisvectorquantity.

Types of motionTypes of motionTranslation: Amotionissaidtobetranslationifa

ll l i i i l i i iaralleltoitsoriginalpositionatanytime.

Rectilinearmotion: Duringtranslationifthepathalled rectilinear motionalledrectilinearmotion

Curvilinearmotion: Duringtranslationifthepathalledcurvilinearmotion.

Rotation: Amotionissaidtobeinrotationalmotioncentriccircles.

Motioncanbeacombinationoftranslationandroorexamplemotionofawheelofacarisbothrota

astraightdrawnonthemovingbodyremains

tracedbyanypointinthebodyisstraight,itis

htracedbyanypointinthebodyiscurve,itis

ionifalltheparticleoftherigidbodymovein

otation.ationalandtranslational

Motion of body with uniforMotion of body with uniforrm(constant) accelerationrm(constant) acceleration

Question bank (10 mQuestion bank (10 mark)ark)

D Alemberts principlD Alembert s principlee

Work Energy methodWork Energy methoddd

Work Energy EquatioWork- Energy Equatioon for translationon for translation