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The moment of inertia of a wheel of radi...

The moment of inertia of a wheel of radiu 20 cm is 40 kg `m^(2)`. If a tangential force of 80 N applied on the wheel, its Rotational K.E. after 4s is

A

16.2J

B

51.2J

C

25.6J

D

24.8J

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The correct Answer is:
B
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