System of Particles and Rotational Motion - Result Question 68
75. The moment of inertia of a body about a given axis is . Initially, the body is at rest. In order to produce a rotational kinetic energy of 1500 joule, an angular acceleration of must be applied about that axis for a duration of
[1990]
(a) 4 seconds
(b) 2 seconds
(c) 8 seconds
(d) 10 seconds
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Answer:
Correct Answer: 75. (b)
Solution:
- (b)
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