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QUESTION
A disk with a rotational inertia of 6 kgm2 is rotating at 10 rad/s. At t = 0, a net torque is applied to the disk causing it to slow down with a...
A disk with a rotational inertia of 6 kgm2 is rotating at 10 rad/s. At t = 0, a net torque is applied to the disk causing it to slow down with a constant angular acceleration of magnitude 4 rad/s2.
a. How much time (after t = 0) does it take for the disk to come to rest? ans=5/2s b. What is the magnitude of the net torque on the disk? ans=24N.mc. How much work is done by the net torque when the disk’s speed changes from 10 rad/s to 0 rad/s? ans=-300 J
