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A torque of 50 N-m acting on a wheel at ...

A torque of 50 N-m acting on a wheel at rest rotates it through 200 rad in 5 sec. Its angular acceleration is -

A

8 rad `sec^(-2)`

B

4 rad `sec^(-2)`

C

16 rad `sec^(-2)`

D

12 rad `sec^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
C
`theta= omega_(0) t+ (1)/(2) alpha t^(2) rArr 200 = (1)/(2) alpha (5)^(2) rArr alpha= 16 "rad"/sec^(2)`
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