# Laws of Motion (AIIMS (All India Institute of Medical Sciences) Physics): Questions 10 - 13 of 17

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## Question number: 10

» Laws of Motion » Force and Inertia

Appeared in Year: 2005

Assertion-Reason▾

### Assertion (Ꭺ)

Frictional forces are conservative forces.

### Reason (Ꭱ)

Potential energy can be associated with frictional forces.

### Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is true but Ꭱ is false

## Question number: 11

» Laws of Motion » Centripetal Force

MCQ▾

### Question

A body of mass 7 kg is moving in a circle of diameter 2 m with an angular velocity of. The centripetal force is –

### Choices

Choice (4) Response

a.

350 N

b.

75 N

c.

175 N

d.

100 N

## Question number: 12

» Laws of Motion » Law of Conservation of Linear Momentum

MCQ▾

### Question

A particle of mass ‘m’ moving with velocity collides inelastically with a stationary particle of mass ‘3m’. The speed of the system after collision will be

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 13

» Laws of Motion » Impulse

MCQ▾

### Question

In below figure between two rigid walls P and Q, a block of mass is moving with constant velocity , towards a spring of spring constant . The block is moving from P and strikes at the end R of the spring at distance . If the collision between the block and wall P is perfectly elastic, the time period T (in seconds) of the motion of the block will be –

### Choices

Choice (4) Response

a.

b.

c.

d.