Laws of Motion (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 7 - 9 of 20

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Question number: 7

» Laws of Motion » Law of Conservation of Linear Momentum

Appeared in Year: 2013

MCQ▾

Question

A bullet of mass m is fired horizontally into a large sphere of mass M and radius R resting on a smooth horizontal table.

A bullet of mass m is fired horizontally into a large sphere.

A Bullet of Mass M Is Fired Horizontally Into a Large Sphere.

In figure a bullet of mass m is fired horizontally in to a large sphere of mass M and radius r resting on a smooth horizontal table.

The bullet hits the sphere at a height h from the table and sticks to its surface. If the sphere starts rolling without slipping immediately on impact, then

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 8

» Laws of Motion » Equilibrium of Concurrent Forces

Appeared in Year: 2015

MCQ▾

Question

Two blocks of masses 5m and 4m in contact on a smooth table. A force P is first applied horizontally on block of mass 5 m and then on 4m. The contact forces between the two blocks in the two cases in the ratio

Two blocks of different masses connected

Two Blocks of Different Masses Connected

In figure two blocks of different masses 5 m and 4 m in contact on a smooth table. Force P is applied on both the block one by one.

Choices

Choice (4) Response

a.

3: 2

b.

5: 3

c.

2: 3

d.

1: 2

Question number: 9

» Laws of Motion » Force and Inertia

MCQ▾

Question

A water drop of mass m = 80 mg is introduced between two plates with separation d = 0.06 mm. Calculate the force of attraction between the plates.

Choices

Choice (4) Response

a.

3.11 N

b.

3.0 N

c.

3.87 N

d.

2.17 N

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