1

2h30m

:........................................................ Code: 5054 Class: GBIII

Test (Unit 1-6) :................................................................................................................

Time Allowed: Maximum Marks: 100

Date

Name Paper: Physics

1

This document consists of 21 printed pages.

Adabistan-e-Soophia

A family goes on holiday in a car. To stop the journey being boring for the children, every half an hour they note down the distance they have travelled since they left home. They then plot the graph shown in Fig. 1.1.

0

100

0 1 2 3

time since leaving home /hours

distance fromhome /km

4 5 6

200

300

400

Fig. 1.1

The first half hour and the last half hour of their journey are on small roads. The rest of the journey is on major roads.

Answer the following questions using information from Fig. 1.1.

(a) For how many hours were they travelling on major roads?

time = ........................................ hours [1]

(b) How far did they travel

(i) in total,

total distance = ................................................ km

(ii) on small roads,

distance on small roads = ................................................ km

[Turn over

Theory Section: [Total 50 Marks]

On Fig. 1.1, clearly mark where they had these stops. [1]

(iii) on major roads?

distance on major roads = ................................................ km[3]

2

(c) They had two refreshment stops whilst on the journey.

(d) Apart from the times when they stopped, during which section of the journey was their speed slowest? Explain your answer.

section ..............................................................................................................................

explanation .......................................................................................................................

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

(e) Calculate the average speed for the whole journey. Your answer must include the unit.

average speed = .................................................. [3]

[Total: 10]2 (a) Fig. 2.1 shows a brick.

Fig. 2.1

500 bricks like the one shown in Fig. 2.1 are stacked on a wooden platform, known as a pallet. The pallet of bricks is to be loaded on to a lorry by means of a fork-lift truck, as shown in Fig. 2.2.

pallet

bricks

fork-lift truck

Fig. 2.2[Turn over

Each brick has a volume of 0.0012 m3 and is made of a material of density 2300 kg / m3.

(i) Calculate the mass of one brick.

mass = ........................................... kg [3]

[Turn over

3

(ii) The fork-lift truck can safely lift a load of mass 2 tonnes (2000 kg). The wooden pallet has a mass of 100 kg.

1. Calculate the total mass of the pallet and 500 bricks.

total mass = ................................................. kg

2. Is it safe for the fork-lift truck to lift the total mass of the pallet and 500 bricks?

yes

no [3]

(b) The brick shown in Fig. 2.3 has the same dimensions as the brick in Fig. 2.1 and is made of the same material. However, this brick has a hollow in one face.

hollow

Fig. 2.3

Complete the following sentences.

(i) The density of the brick in Fig. 2.3 is ……………………………………… the density

of the brick in Fig. 2.1, because ………………………………………………………….

………………………………………………………….…………………………………. .

(ii) The mass of the brick in Fig. 2.3 is ……………………………………… the mass of the brick in Fig. 2.1.

[2] [Total: 8]

3

4

A piece of stiff cardboard is attached to a plank of wood by two sticky-tape “hinges”, as shown in Fig. 3.1.

stiffcardboard

sticky-tape “hinge”

plank ofwood

Fig. 3.1

(a) The cardboard in Fig. 3.1 is to be lifted by a vertical force F, so that it turns about the hinges.

(i) What name do we give to the turning effect of a force?

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

(ii) Force F is to be as small as possible.

On Fig. 3.1, show force F, positioned so that it fulfils this requirement. [1]

(b) A box of matches is balanced on the cardboard, as shown in Fig. 3.2.

supermatches

Fig. 3.2

(i) The left-hand edge of the cardboard is gradually raised. The box does not slide.

What will eventually happen to the box of matches as the edge is raised?

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

(ii) State where the centre of mass of the box is positioned when this happens.

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

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

[Turn over

........ [2]

5

(c) Filing cabinets often have a mechanism that prevents more than one drawer being opened at a time. Fig. 3.3 shows a filing cabinet standing on the floor with the middle drawer open.

Fig. 3.3

State and explain why it might be dangerous to open the top drawer at the same time as the middle drawer.

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

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

...................................................................................................................................... [2][Total: 7]

[Turn over

4 (a) A spring is hung from a support. A load, hung on the spring, makes it extend.

Describe how you would use a ruler to measure the extension.

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

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

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

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

(b) The lengths of the spring are found for loads of various weights. From these lengths, the extensions are calculated. Most of the results are shown in the table below.

load / N length / mm extension / mm

0 200 0

1.0 220 20

2.0 249 49

3.0 258

4.0 279 79

5.0 97

6.0 318 118

(i) Calculate the two missing values and insert them in the table. [1]

[Total: 9]

[Turn over

6

On Fig. 4.1, plot the values of extension against load, but do not draw the line yet.[2]

00

20

40

60

80

100

120

1 2 3 4 5 6

load /N

extension /mm

Fig. 4.1

(iii) A mistake was made with one of the length values.

State the value of the length that is incorrect. .................................................. [1]

(iv) Ignoring the value in (iii), draw the best-fit straight line through your points and the origin. [1]

(v) Complete the following sentences.

Within the limits of the experiment, when the load doubles, the extension of the spring

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

The straight-line graph through the origin shows that the extension and the load are

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

[Total: 6]

........ [2]

7

[Turn over

5 Fig. 5.1 shows apparatus used to investigate the turning effect of a force.

40cm

20 cmpivot uniform metre rule

4.0 N

newton meter

Fig. 5.1

The uniform metre rule is freely pivoted at its centre.

The newton meter is 20 cm from the pivot and a 4.0 N weight is 40 cm from the pivot.

The metre rule is in equilibrium.

(a) State the principle of moments for a body in equilibrium.

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

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

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

(b) Calculate the reading on the newton meter.

reading = .................................................. [2]

(c) The weight of the metre rule is 1.2 N.

Calculate the size of the force exerted on the metre rule by the pivot.

force = .................................................. [2]

8

[Turn over

1 A body slides down a frictionless slope as shown.

As the body presses on the surface, the surface pushes back on the body. The force of the surface on the body is sometimes called the reaction force.

In which direction does the reaction force act?

B C

D

A

direction of motion

2 Paper is sold in packets labelled 80g / m2. This means that a sheet of paper of area 10000cm2

has a mass of 80 g.

The thickness of each sheet is 0.11mm.

What is the density of the paper?

A 0.073g / cm3 B 0.088g / cm3 C 0.73g / cm3 D 0.88g / cm3

3 Which chair is the least stable if the child moves?

A B C D

4 Before marking the finishing line on a running track, a groundsman measures out its 100m length.

Which instrument is the most appropriate for this purpose?

A measuring tape

B metre rule

C 30cm ruler

D micrometer

MCQ Section: [Total 30 Marks]

[Turn over

9

5 A measuring cylinder contains 20cm3 of water. A stone is placed in the water and the water level rises to 38cm3.

What is the volume of the stone?

A 18cm3 B 29cm3 C 38cm3 D 58cm3

6 The diagram shows a force being applied to a lever to lift a heavy weight.

forcepivot lever

heavy weight

Which change would enable the heavy weight to be lifted with a smaller force?

A Move the force to the right.

B Move the heavy weight to the right.

C Move the force to the left.

D Move the pivot to the left.

7 A car moves along a level road.

The diagram shows all of the horizontal forces acting on the car.

2000N forcefrom engine500N

friction

800Nair resistance

Which statement is correct?

A The car is slowing down.

B The car is speeding up.

C The car is moving at a constant speed.

D The car is moving backwards.

8 A 1 kg sample of aluminium is stored in a laboratory. In a different laboratory, in the same town, there is a 1kg sample of iron.

Which quantity must these two samples always have in common?

A the same density

B the same temperature

C the same volume

D the same weight

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10

9 The diagrams show different objects, each being acted upon by only the two forces shown.

Which object is in equilibrium?

3 N

3 N

A

4N 4 N

B

5N

5N

4 N

5N

C D

10 A measuring cylinder containing liquid is placed on a top-pan balance. The apparatus is left overnight and some of the liquid evaporates. The diagrams show the readings.

g

251

252

249

248

250

cm3

before liquid

evaporates

liquid

g

243

244

241

240

242

cm3

after liquid

evaporates

liquid

measuring

cylinder

What is the density of the liquid?

A 0.875g / cm3 B 1.14g / cm3 C 1.40g / cm3 D 1.42g / cm3

11 A child sits on a rubber ball and bounces up and down on the ground.

What stays the same when the ball hits the ground?

A the acceleration of the ball

B the mass of the ball

C the shape of the ball

D the velocity of the ball

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11

12 Masses X and Y are placed on opposite sides of the centre of a uniform metre rule, which is pivoted at its centre.

sp

X Y

Which combination of masses and distances balances the rule?

mass / g distance / cm

X Y p s

A 200 200 5 10

B 200 300 10 15

C 400 300 12 16

D 500 200 15 30

13 A student balances a non-uniform object on a pivot. To do this, a weight is suspended near the left-hand end of the object.

Where is the centre of mass of the object?

A B CD

weight pivot

object

[Turn over

12

14 An object has a mass of 15 kg. It is pushed horizontally by a force of 40 N. The frictional force is 10N.

What is the acceleration of the object?

A 0.50m/ s2 B 1.5 m / s2 C 2.0 m / s2 D 2.7 m / s2

15 An object Y is in a fixed position on a rod. A weight X is moved and the position of a pivot is adjusted until the rod balances on the pivot, as shown.

pivot

Y

X

The experiment is repeated in a region where the gravitational field strength is lower.

What is done to keep the rod balanced?

pivot X

A move left no movement

B move right move left

C no movement move right

D no movement no movement

16 Four solid uniform cones have equal weight. They are placed on a bench as shown in the scale diagram.

Which cone is the most stable?

A B C D

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13

17 The speed-time graph for a car is shown.

25

20

15

10

5

00 10 20 30 40 50

time / s

speedm/s

What is the acceleration of the car at 30s?

A 0 B30

525 − m/ s2 C30

25m/ s2 D

50

25m/ s2

18 The diagram shows a firework rocket.

P Q

RS

As the rocket flies through the air, three forces act on it. These forces are weight, thrust and air resistance.

What are the three forces?

thrust air resistance weight

A P R S

B P S R

C Q R S

D Q S R

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14

19 The level of water in a measuring cylinder is 75 cm3. A stone of volume 20 cm3 is lowered into the water.

What is the new reading of the water level?

A 20cm3 B 55cm3 C 75cm3 D 95cm3

20 The diagram shows three forces acting on a block.

3 N

2 N

11 N

Which additional force will produce a resultant force of 3N to the left?

A 3 N to the left B 6 N to the right C 9 N to the left D 13N to the right

21 A table-tennis ball is released from the top of an evacuated tube.

ball

vacuum

Which graph shows how the speed of the ball changes with time as it falls to the bottom of the tube?

A

speed

time00

B

speed

time00

C

speed

time00

D

speed

time00

22 A car of mass 1500 kg is towing a trailer of mass 1100 kg along a level road. The acceleration of the car is 1.30m/ s2.

Ignoring friction and air resistance, what is the driving force on the car?

A 1430N B 1950N C 2000N D 3380N

[Turn over

15

23 A steel ball is released just below the surface of thick oil in a cylinder.

During the first few centimetres of travel, what is the acceleration of the ball?

A constant and equal to 10m/ s2

B constant but less than 10m/ s2

C decreasing

D increasing

24 A hard stone hits the ground and comes to rest almost immediately.

As the stone hits the ground, what is the direction and the size of the force acting on the ground?

A downwards and equal to the weight of the stone

B downwards and larger than the weight of the stone

C upwards and equal to the weight of the stone

D upwards and larger than the weight of the stone

25 The mass of a paper-clip is 0.50 g and the density of its material is 8.0 g / cm3. The total volume of a number of clips is 20cm3.

How many paper-clips are there?

A 80 B 160 C 240 D 320

26 The diagram shows a uniform balanced beam, pivoted about its centre.

P

2 cm

2 cm6 cm

3 N 4 N

What is the value of force P?

A 5 N B 7 N C 10N D 13N

27 The diagram shows four shapes, cut from the same piece of card.

Which shape has its centre of mass nearest to the base line?

A B C D

base line

[Turn over

16

28 The diagram shows a motorcyclist leaning over in order to move around a corner.

Which force causes him to move around the corner?

motorcyclist

A

B

C

D

29 The diagram shows part of a micrometer screw gauge.

What is the reading shown?

A 5.31 mm B 5.79 mm C 5.81 mm D 6.31 mm

0 1 2

30

3 4 5

mm

30 Books are placed in four bookcases as shown.

Which bookcase is most likely to fall forward if pulled a little?

A B C D

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17

30 A B C D

29 A B C D

28 A B C D

27 A B C D

26 A B C D

25 A B C D

24 A B C D

23 A B C D

22 A B C D

21 A B C D

20 A B C D

19 A B C D

18 A B C D

17 A B C D

16 A B C D

Candidate Name:

Multiple Choice Answer Sheet

1 A B C D

2 A B C D

3 A B C D

4 A B C D

5 A B C D

6 A B C D

7 A B C D

8 A B C D

9 A B C D

10 A B C D

11 A B C D

12 A B C D

13 A B C D

14 A B C D

15 A B C D

Example

For question 1,

If you think B is the right answer, fill in

your answer sheet like this:

1 A B C D

Instructions

Shade

One

letter

only

for

each

question

Make

sure

you

put

your

answer

in

line

with

the

correct

question

number

General Certificate of Education Ordinary Level

Adabistan-e-Soophia31-Bhawalpur Road,Mozang Chungi,Lahore

18

ATP Section: [Total 20 Marks]

[Turn over

1 A student investigates the time taken for a light paper cup to fall to the floor.

The student holds one paper cup, as shown in Fig. 1.1.

Fig. 1.1

The student drops the cup and measures the time t for it to fall to the floor.

(a) The student repeats the experiment and obtains the following five values for t, measured in seconds.

1.19 1.00 0.93 1.03 1.08

(i) Calculate tav, the average value for t. Give your answer to two decimal places.

tav = ............................................... [2]

(ii) The student records his value for tav to more than two decimal places. Suggest why two decimal places is more suitable in this case.

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

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

(iii) The student finds it difficult to drop the cup and measure t. Suggest how two students working together can measure t more accurately.

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

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

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

(b) The student repeats the experiment with two cups, as shown in Fig. 1.2.

two cups

Fig. 1.2

[Turn over

19

The experiment is repeated for an increasing number of cups. The results obtained are recorded in Fig. 1.3, where N is the number of cups.

Add to Fig. 1.3 your value of tav for one cup from (a)(i).

N tav / s

1

2 0.89

3 0.82

5 0.69

7 0.63

9 0.61

11 0.61

Fig. 1.3

(i) On Fig. 1.4, plot the graph of tav / s on the y-axis against N on the x-axis. Start your axes from tav = 0.5 s and N = 0. Draw the smooth curve of best fit.

0.50

[4]Fig. 1.4

[Turn over

20

(ii) When two quantities x and y are inversely proportional to each other, they obey the relationship

x × y = constant.

Use data from the graph or table to explain whether tav is inversely proportional to N.

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

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

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

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

(c) It is important to drop the cup from the same height each time. Explain how the student does this without measuring the height.

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

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

(d) Name the physical quantity being changed by increasing the number of cups.

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

(e) The student accidentally stands on one cup. Explain why it should not be used in the investigation.

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

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

(f) Suggest a reason why the last two values for tav in Fig. 1.3 are the same.

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

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

[Total: 15]

21

2 A student uses a pendulum to obtain a value for the acceleration of free fall g.Fig. 2.1 shows the pendulum hanging from a fixed support.

bench

support

string

pendulumbob

Fig. 2.1 (not to scale)

(a) The length l of the pendulum is measured from the support to the centre of mass of the bob.

(i) On Fig. 2.1, mark and label the length l of the pendulum. [1]

(ii) Describe a method of measuring l accurately.

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

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

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

(b) Three measurements are taken of the time for 20 complete swings of the pendulum. Explain how to find the average time T for one complete swing.

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

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

(c) The value obtained for l is 0.450 m and for T is 1.33 s.

Using the relationship

g = 4π2l

T 2

calculate a value for g. Give your answer to 3 significant figures.

g = ........................................... m / s2 [1]

(d) Suggest an improvement to this experiment.

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

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

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

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

[Total: 5]