A mass of 10 kg connected at the end of a rod of negligible mass is rotating in a circle of radius 30 cm with an angular velocity of 
. If this mass is brought to rest in 10 s by a brake, what is the magnitude of the torque applied?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Negative sign indicates retardation.
Now, 
Magnitude of torque, 
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