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A wheel rotating at an angular speed of ...

A wheel rotating at an angular speed of `20 rads^(-1)`, is brought to rest by a constant. torque in 4s. If the M.I is `0.2 kg m^(2)` the work done in first 2s is

A

50J

B

30J

C

20 J

D

10 J

Text Solution

Verified by Experts

The correct Answer is:
B
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