Rotational Motion (NEET Physics): Questions 120 - 123 of 123

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Question number: 120

» Rotational Motion » Frequency and Period

MCQ▾

Question

A solid cylinder of mass M and radius R rolls without slipping down an inclined plane of length l and height h. Find the time it takes to reach at bottom.

Choices

Choice (4) Response
a.

3hgsinθ

b.

hgsinθ

c.

hg1sinθ

d.

3hg1sinθ

Question number: 121

» Rotational Motion » Angular Momentum

MCQ▾

Question

An inclined plane makes an angle 30° with the horizontal. A solid sphere rolling down this inclined plane from rest without slipping has a linear acceleration equal to,

Choices

Choice (4) Response
a.

5g7

b.

g3

c.

2g3

d.

5g14

Question number: 122

» Rotational Motion » Rotational Kinetic Energy

Appeared in Year: 2016

MCQ▾

Question

Two rotating bodies A and B of masses m and 2m with moments of inertia IA and IB(IB>IA) , have equal kinetic energy of rotation. If LA and LB be their angular momenta respectively, then –

Choices

Choice (4) Response
a.

LA>LB

b.

LA=2LB

c.

LA=LB2

d.

LB>LA

Question number: 123

» Rotational Motion » Rotational Kinetic Energy

Appeared in Year: 2016

MCQ▾

Question

A solid sphere of mass m and radius R is rotating about its diameter. A solid cylinder of the same mass and same radius is also rotating about its geometrical axis with an angular speed twice that of the sphere. The ratio of their kinetic energies of rotation (EsphereEcylinder) will be:

Choices

Choice (4) Response
a.

1:4

b.

3:1

c.

1:5

d.

2:3

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