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 |
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.
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 |
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 |
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 |
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 |
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 |