# Rotational Motion-Rotational Kinetic Energy [NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 1 - 4 of 6

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## Question number: 1

» Rotational Motion » Rotational Kinetic Energy

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MCQ▾

### Question

Two disc, each having moment of inertia 5 kg m 2 about its central axis, rotating with speeds 10 rad s -1 and 20 rad s -1, are brought in contact face with their axes of the rotation coincided. The loss of kinetic energy in the process is,

### Choices

Choice (4)Response

a.

125 J

b.

2 J

c.

0 J

d.

5 J

## Question number: 2

» Rotational Motion » Rotational Kinetic Energy

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MCQ▾

### Question

A sphere is rolling without slipping on a horizontal plane. The ratio of its rotational kinetic energy and translation kinetic energy is,

### Choices

Choice (4)Response

a.

2: 3

b.

2: 7

c.

2: 9

d.

2: 5

## Question number: 3

» Rotational Motion » Rotational Kinetic Energy

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MCQ▾

### Question

A body is rolling down an inclined plane. Its translational and rotational kinetic energies are equal. The body is not a,

(1) Solid sphere

(2) Hollow sphere

(3) Solid cylinder

(4) Hollow cylinder

Select the correct answers and mark it according to the following codes:

### Choices

Choice (4)Response

a.

2 and 4 are correct

b.

1 and 2 are correct

c.

1,2 and 3 are correct

d.

1 and 3 are correct

## Question number: 4

» Rotational Motion » Rotational Kinetic Energy

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MCQ▾

### Question

The moment of a uniform disc about an axis, perpendicular to the disc, at the centre is (M = mass, R = radius of disc). If the disc is rolling on its edge without slipping on a straight line path, the ratio of rotation kinetic energy to translation one is,

### Choices

Choice (4)Response

a.

1

b.

c.

d.

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