# Rotational Motion-Moment of Inertia (KVPY (Kishore Vaigyanik Protsahan Yojana) Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 4 - 6 of 6

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## Question number: 4

» Rotational Motion » Moment of Inertia

MCQ▾

### Question

A homogeneous sphere of mass M and radius R has moment of inertia I about its diameter. A concentric sphere of radius is carved out from the sphere. What is the moment of inertia of the remaining part about the diameter?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 5

» Rotational Motion » Moment of Inertia

Appeared in Year: 2015

MCQ▾

### Question

A horizontal disk of moment of inertia 4.25 kg-m2 with respect to its axis of symmetry is spinning counter clockwise at 15 revolutions per second about its axis, as viewed from above. A second disk of moment of inertia 1.80 kg-m2 with respect to its axis of symmetry is spinning clockwise at 25 revolutions per second as viewed from above about the same axis and is dropped on top of the first disk. The two disks stick together and rotate as one about their axis of symmetry. The new angular velocity of the system as viewed from above is close to.

### Choices

Choice (4) Response

a.

18 revolutions per second and counter clockwise

b.

3 revolutions per second and clockwise

c.

3 revolutions per second and counter clockwise

d.

18 revolutions per second and clockwise

## Question number: 6

» Rotational Motion » Moment of Inertia

MCQ▾

### Question

An equilateral triangle is formed by three identical uniform rods each of length L and mass M. The moment of inertia of the system about an axis passing through one corner is –

### Choices

Choice (4) Response

a.

b.

c.

d.

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