Rotational Motion (NEET Physics): Questions 1 - 6 of 123

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Question number: 1

» Rotational Motion » Angular Momentum

MCQ▾

Question

Calculate the angular momentum of a body whose rotational energy is 10 joule. If the angular momentum vector coincides with the axis of rotation and its moment of inertia about this axis is 8 x 10 -7 kg m 2

Choices

Choice (4) Response

a.

2 x 10 -3 kg m 2 /s

b.

6 x 10 -3 kg m 2 /s

c.

4 x 10 -3 kg m 2 /s

d.

Question does not provide sufficient data or is vague

Passage

Consider a cylinder of mass M = 1 kg and radius R = 1 m lying on a rough horizontal plane. It has a plank lying on its top as shown in the figure.

Cylinder of mass 1 kg and Radius 1 meter on the sphere

Cylinder of Mass 1 Kg and Radius 1 Meter on the Sphere

in above fig cylinder of m = 1kg on the sphere of radius R.

A force F = 35 N is applied on the plank such that the plank moves and causes the cylinder to roll. The plank always remains horizontal. There is no slipping at any point of contact.

Question number: 2 (1 of 3 Based on Passage) Show Passage

» Rotational Motion » Angular Momentum

MCQ▾

Question

Calculate the acceleration of cylinder.

Choices

Choice (4) Response

a.

20 m/s 2

b.

10 m/s 2

c.

6.36 m/s 2

d.

Question does not provide sufficient data or is vague

Question number: 3 (2 of 3 Based on Passage) Show Passage

» Rotational Motion » Angular Momentum

MCQ▾

Question

Find the value of frictional force at B

Choices

Choice (4) Response

a.

2.5 N

b.

5.0N

c.

4.5 N

d.

All of the above

Question number: 4 (3 of 3 Based on Passage) Show Passage

» Rotational Motion » Angular Momentum

MCQ▾

Question

Find the value of frictional force at A

Choices

Choice (4) Response

a.

2.5 N

b.

7.5 N

c.

4.77 N

d.

Question does not provide sufficient data or is vague

Question number: 5

» Rotational Motion » Angular Momentum

MCQ▾

Question

A wheel rotates with a constant acceleration of 2.0 radian/sec 2. It the wheel starts from rest, the number of revolutions it makes in the first ten seconds will be approximately

Choices

Choice (4) Response

a.

16

b.

8

c.

24

d.

32

Question number: 6

» Rotational Motion » Angular Momentum

MCQ▾

Question

If the earth is a point mass of 5 × 1024 kg revolving around the sun at a distance of 1.1 × 108 km and in time T = 3.14 × 107 s. Then the angular momentum of the earth around the sun is

Choices

Choice (4) Response

a.

1.5 x 10 37 kg m 2 /s

b.

1.21 x 10 40 kg m 2 /s

c.

2.7 x 10 40 kg m 2 /s

d.

1.21 x 10 40 kg m 2

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