Question

A flywheel rotates with a constant retardation due to braking. From t= 0 to t=10 seconds, it made 400 revolutions. At time t= 7.5 sec, its angular velocity was 40 π rad/sec. Determine (i) value of constant retardation; (ii) total time taken to come to rest and (iii) total revolutions made till it comes to rest.

Answer 1

Retardation is constant throughout.