# AS Physics : Mechanics - January 2010 Past Paper

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AS Physics : Mechanics - January 2010 Past PaperPDF Document 665.89 Kb

## Pages in this set

### Page 1

THIS IS A NEW SPECIFICATION

ADVANCED SUBSIDIARY GCE

PHYSICS A G481

Mechanics

Wednesday 13 January 2010

* O C E / 1 9 0 7 3 *

Candidates answer on the Question Paper

OCR Supplied Materials:

Morning

Data, Formulae and Relationships Booklet

Duration: 1 hour

Other Materials Required:

· Electronic…

ADVANCED SUBSIDIARY GCE

PHYSICS A G481

Mechanics

Wednesday 13 January 2010

* O C E / 1 9 0 7 3 *

Candidates answer on the Question Paper

OCR Supplied Materials:

Morning

Data, Formulae and Relationships Booklet

Duration: 1 hour

Other Materials Required:

· Electronic…

### Page 2

2

Answer all the questions.

1 (a) Draw a line from each unit on the left-hand side to the correct equivalent unit on the right-

hand side.

joule (J) kg m s2

watt (W) Nm

newton (N) J s1

[2]

(b) This question is about estimating the pressure exerted by…

Answer all the questions.

1 (a) Draw a line from each unit on the left-hand side to the correct equivalent unit on the right-

hand side.

joule (J) kg m s2

watt (W) Nm

newton (N) J s1

[2]

(b) This question is about estimating the pressure exerted by…

### Page 3

3

(ii) Estimate the total area of contact in square metres between the shoes of this person and

the floor.

area = .................................................... m2 [1]

(iii) Hence estimate the pressure in pascals exerted by this person standing on the floor.

pressure = .................................................... Pa [1]

[Total: 5]

© OCR 2010…

(ii) Estimate the total area of contact in square metres between the shoes of this person and

the floor.

area = .................................................... m2 [1]

(iii) Hence estimate the pressure in pascals exerted by this person standing on the floor.

pressure = .................................................... Pa [1]

[Total: 5]

© OCR 2010…

### Page 4

4

2 Fig. 2.1 shows two masses A and B tied to the ends of a length of string. The string passes over a

pulley. The mass A is held at rest on the floor.

pulley

B

1.50 kg

2.80 m

A

floor 1.20 kg

Fig. 2.1

The mass A…

2 Fig. 2.1 shows two masses A and B tied to the ends of a length of string. The string passes over a

pulley. The mass A is held at rest on the floor.

pulley

B

1.50 kg

2.80 m

A

floor 1.20 kg

Fig. 2.1

The mass A…

### Page 5

5

(iii) Calculate the velocity of mass B after falling 1.40 m.

velocity = ................................................ m s1 [2]

(iv) Mass B hits the floor at a speed of 2.47 m s1. It rebounds with a speed of 1.50 m s1.

The time of contact with the floor is 3.0 ×…

(iii) Calculate the velocity of mass B after falling 1.40 m.

velocity = ................................................ m s1 [2]

(iv) Mass B hits the floor at a speed of 2.47 m s1. It rebounds with a speed of 1.50 m s1.

The time of contact with the floor is 3.0 ×…

### Page 6

6

3 A lift has a mass of 500 kg. It is designed to carry a maximum of 8 people of total mass 560 kg. The

lift is supported by a steel cable of cross-sectional area 3.8 × 104 m2. When the lift is at ground

floor level the cable…

3 A lift has a mass of 500 kg. It is designed to carry a maximum of 8 people of total mass 560 kg. The

lift is supported by a steel cable of cross-sectional area 3.8 × 104 m2. When the lift is at ground

floor level the cable…

### Page 7

7

(b) (i) The lift with its 8 passengers is stationary at the ground floor level. The initial upward

acceleration of the lift and the cable is 1.8 m s2. Show that the maximum tension in the

cable at point P is 1.7 × 104 N.

[4]

(ii) Calculate the…

(b) (i) The lift with its 8 passengers is stationary at the ground floor level. The initial upward

acceleration of the lift and the cable is 1.8 m s2. Show that the maximum tension in the

cable at point P is 1.7 × 104 N.

[4]

(ii) Calculate the…

### Page 8

8

4 (a) An electron in a particle accelerator experiences a constant force. According to one student,

the acceleration of the electron should remain constant because the ratio of force to mass

does not change. In reality, experiments show that the acceleration of the electron decreases

as its velocity increases.…

4 (a) An electron in a particle accelerator experiences a constant force. According to one student,

the acceleration of the electron should remain constant because the ratio of force to mass

does not change. In reality, experiments show that the acceleration of the electron decreases

as its velocity increases.…

### Page 9

9

(c) Fig. 4.2 shows a ship S being pulled by two tug-boats.

Not to scale

1.50 kN

cable

S

55°

direction of

35° travel of

ship S

2.14 kN

tug-boat

Fig. 4.2

The ship is travelling at a constant velocity. The tensions in the cables and the angles made…

(c) Fig. 4.2 shows a ship S being pulled by two tug-boats.

Not to scale

1.50 kN

cable

S

55°

direction of

35° travel of

ship S

2.14 kN

tug-boat

Fig. 4.2

The ship is travelling at a constant velocity. The tensions in the cables and the angles made…

### Page 10

10

5 (a) State the principle of conservation of energy.

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

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

(b) Describe one example where elastic potential energy is stored.

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

(c) Fig. 5.1 shows a simple pendulum with a metal ball attached to the end of a string.

string

m

P

h

v

Fig. 5.1…

5 (a) State the principle of conservation of energy.

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

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

(b) Describe one example where elastic potential energy is stored.

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

(c) Fig. 5.1 shows a simple pendulum with a metal ball attached to the end of a string.

string

m

P

h

v

Fig. 5.1…

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