Rotational Motion (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 99 - 103 of 125

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Question number: 99

» Rotational Motion » Angular Momentum

MCQ▾

Question

A uniform rod of length 2L is placed with one end in contact with the horizontal and is then inclined at an angle α to the horizontal and allowed to fall without slipping at contact point. When it becomes horizontal, its angular velocity will be

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 100

» Rotational Motion » Rigid Body Rotation Equations of Rotational Motion

MCQ▾

Question

The angular velocity of a body is . A torque acts on it. The rotational power is,

Choices

Choice (4) Response

a.

29 W

b.

27 W

c.

23 W

d.

25 W

Question number: 101

» Rotational Motion » Moment of Inertia

MCQ▾

Question

The moment of inertia of a circular ring about an axis passing through its center and normal to its plane is 200 gm ⨯ cm 2. Then moment of inertia about its diameter is,

Choices

Choice (4) Response

a.

400 gm ⨯ cm 2

b.

100 gm ⨯ cm 2

c.

200 gm ⨯ cm 2

d.

300 gm ⨯ cm 2

Question number: 102

» Rotational Motion » Rotational Kinetic Energy

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: 9

b.

2: 3

c.

2: 5

d.

2: 7

Question number: 103

» Rotational Motion » Moment of Inertia

MCQ▾

Question

From a circular disc of radius R and mass 9 M, a small disc of radius is removed from the disc. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through O is,

A small portion of radius R/3 is removed from thedisc ofradiusR

A Small Portion of Radius R/3 is Removed from Thedisc ofradiusR

Figure shows that circular disc of radius R and mass 9 M, a small disc of radius R/3 is removed from the disc.

Choices

Choice (4) Response

a.

b.

c.

d.

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