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A body whose moment of inertia is 3 "kgm...

A body whose moment of inertia is `3 "kgm"^(2)`, is at rest. It is rotated for 20 s with a moment of force 6 Nm. Find the angular displacement of the body. Also calculate the work done.

A

60 J

B

2400 J

C

120 J

D

4800 J

Text Solution

Verified by Experts

The correct Answer is:
B
`tau = I alpha` and `theta = omega_(1) t+(1)/(2) alpha t^(2)`
Work done `= tau theta`
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