Rotational Motion [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 1 - 6 of 292

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Question 1

Question MCQ▾

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 × 10-7 kg m2

Choices

Choice (4)Response

a.

2 × 10-3 kg m2 /s

b.

4 × 10-3 kg m2 /s

c.

6 × 10-3 kg m2 /s

d.

All of the above

Edit

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

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 2 (1 of 3 Based on Passage)

Question MCQ▾

Calculate the acceleration of cylinder.

Choices

Choice (4)Response

a.

10 m/s2

b.

6.36 m/s2

c.

20 m/s2

d.

None of the above

Edit

Question 3 (2 of 3 Based on Passage)

Question MCQ▾

Find the value of frictional force at A

Choices

Choice (4)Response

a.

4.77 N

b.

7.5 N

c.

2.5 N

d.

All of the above

Edit

Question 4 (3 of 3 Based on Passage)

Question MCQ▾

Find the value of frictional force at B

Choices

Choice (4)Response

a.

4.5 N

b.

5.0N

c.

2.5 N

d.

All of the above

Edit

Question 5

Question MCQ▾

A wheel rotates with a constant acceleration of 2.0 radian/sec2 . 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.

32

b.

16

c.

24

d.

8

Edit

Question 6

Question MCQ▾

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 × 1037 kg m2 /s

b.

1.21 × 1040 kg m2

c.

1.21 × 1040 kg m2 /s

d.

2.7 × 1040 kg m2 /s

Edit