# Laws of Motion (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 1 - 3 of 20

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## Question number: 1

» Laws of Motion » Laws of Friction

Appeared in Year: 2010

MCQ▾

### Question

A pen of mass ‘m’ is laying on a piece of paper of mass M placed on a rough table. If the coefficient of friction between the pen and paper, and, the paper and table are μ1 and μ2, respectively, then the minimum horizontal force with which the paper has to be pulled for the pen to start slipping is given by-

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 2

» Laws of Motion » Equilibrium of Concurrent Forces

Appeared in Year: 2012

MCQ▾

### Question

A particle is acted upon by a force given by where α and β are positive constants. At the point x = 0, the particle is –

### Choices

Choice (4) Response

a.

In unstable equilibrium

b.

In stable equilibrium

c.

In neutral equilibrium

d.

None of the above

## Question number: 3

» Laws of Motion » Law of Conservation of Linear Momentum

Appeared in Year: 2011

MCQ▾

### Question

At a distance l from a uniformly charged long wire, a charged particle is thrown radially outward with a velocity u in the direction perpendicular to the wire. When the particle reaches a distance 2l from the wire its speed is found to be. The magnitude of the velocity, when it is a distance 4l away from the wire, is (ignore gravity)

### Choices

Choice (4) Response

a.

b.

c.

d.

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