Rotational Motion-Moment of Inertia (NEET Physics): Questions 9 - 12 of 34

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Question number: 9

» Rotational Motion » Moment of Inertia

MCQ▾

Question

Three rings each of mass M and radius R are arranged as shown in the figure. The moment of inertia of the system about YY’ will be,

Arrangements of three circle along the axis YY'

Arrangements of Three Circle Along the Axis YY’

In above figure we shows the three ring of mass M and radius R arranging on YY’

Choices

Choice (4) Response

a.

72MR2

b.

5MR2

c.

3MR2

d.

32MR2

Question number: 10

» Rotational Motion » Moment of Inertia

MCQ▾

Question

Moment of inertia depends on,

(1) Distribution of particles

(2) Mass

(3) Radius of gyration

(4) Medium

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

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1, 2 and 3 are correct

c.

2 and 4 are correct

d.

1 and 2 are correct

Question number: 11

» Rotational Motion » Moment of Inertia

Assertion-Reason▾

Assertion (Ꭺ)

Radius of gyration of a body is a constant quantity.

Reason (Ꭱ)

The radius of gyration of a body about an axis of rotation may be defined as the root mean square distance of the particles of the body from the axis of rotation.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are false

Question number: 12

» Rotational Motion » Moment of Inertia

MCQ▾

Question

From a uniform wire, two circular loops are made loop-P of radius r and loop-Q of radius nr. Materials of both the loops are same. If the moment of inertia of loop Q about an axis passing through its center and perpendicular to its plane is 8 times that of P about a similar axis, the value of n is (diameter of the wire is very much smaller than r or nr)

Choices

Choice (4) Response

a.

6

b.

4

c.

8

d.

2

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