Rotational Motion-Moment of Inertia (NEET Physics): Questions 1 - 3 of 34

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Question number: 1

» Rotational Motion » Moment of Inertia

MCQ▾

Question

Two spheres each of mass M and radius R2 are connected with a massless rod of length 2R as shown in the figure.

Two spheres connected with massless rod

Two Spheres Connected With Massless Rod

In figure two spheres each of mass M and radius R/2 connected with the massless rod of length 2R.

The moment of inertia of the system about an axis passing through the center of one of the spheres and perpendicular to the rod will be

Choices

Choice (4) Response

a.

25MR2

b.

52MR2

c.

521MR

d.

215MR2

Question number: 2

» Rotational Motion » Moment of Inertia

MCQ▾

Question

The density of a rod AB increases linearly from A to B. Its midpoint is O and its centre of mass is at C. Four axes pass through A, B, O and C all perpendicular to the length of the rod. The moments of inertia of the rod about this axis are I A, I B, I O and I C respectively then:

(1) IA>IB (2) IA<IB

(3) IO>IC (4) IO<IC

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: 3

» Rotational Motion » Moment of Inertia

MCQ▾

Question

Three point masses m 1, m 2, m 3 are located at the vertices of an equilateral triangle of length ‘a’. The moment of inertia of the system about an axis along the altitude of the triangle passing through m 1, is

Choices

Choice (4) Response

a.

(m1+m2+m3)a2

b.

(m2+m3)a24

c.

(m1+m2)a24

d.

(m2+m3)a2

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