Question

25. A fly wheel rotating at 600 rev/min is brought
under uniform deceleration and stopped after
2 minutes, then what is angular deceleration in
rad/sec2

(1) π/6
(2) 10 π
(3)1/12
(4) 300
​

Answer 1

Answer:

When a flywheel stops after 2minutes, then the final angular velocity of the flywheel becomes 0. So, the final angular velocity of the rotating object is 0. Convert the initial angular velocity of the flywheel into rad/sec. So, the initial angular velocity of the rotating object is 20πrad/sec.