A gyroscope has a moment of inertia of 0.14 kg*m2 and an initial angular speed of 15 rad/s.Friction in the bearings causes its speed to reduce to zero in 30 s.What is the value of the average frictional torque?
A) 3.3 x 10-2 N*m
B) 8.1 x 10-2 N*m
C) 14 x 10-2 N*m
D) 7.0 x 10-2 N*m
Correct Answer:
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