NEET Physics: Questions 1952 - 1955 of 2099

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Question number: 1952

» Rotational Motion » Values of Moments of Inertia

MCQ▾

Question

A cylinder of 800 g and radius 30 cm has moment of inertia (about its natural axis)

Choices

Choice (4) Response
a.

0.027kgm2

b.

0.030kgm2

c.

0.025kgm2

d.

0.036kgm2

Question number: 1953

» 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: 1954

» Gravitation » Universal Law of Gravitation

MCQ▾

Question

Three particles of equal mass m are situated at the vertices of an equilateral triangle of side l. What should be the velocity of each particle, so that they move on a circular path without changing l?

Choices

Choice (4) Response
a.

2GMl

b.

GMl

c.

GM2l

d.

GM3l

Question number: 1955

» 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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