A 1450 kg disc with radius 3.0 m is rotating at 1500 rev/min when an 925 m·N braking torque is applied to the wheel. How long does it take for the disk to come to rest?
Mass of the disc= 1450kg
Radius=3m
Angular velocity=1500rev/min
Moment of inertia of the circular disc about its center.
1M I = М 2 1 -x 1450kg x 9m 2 1 6525kgm2
As we know, that braking torque will produce deceleratio...
Г-1а г I 925Nm a = 6525kg2 rad a = 0.14
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