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A heavy grindstone (mass,50 kg, radius,0.4 m) is spun up with constant torque from rest to...

A heavy grindstone (mass,50 kg, radius,0.4 m) is spun up with constant torque from rest to a final angular velocity of 1 rev/sec. This is accomplished in 15 seconds.

a)what is the rotational inertia of the grindstone?

b)what is the final kinetic energy of the grindstone?

c)what was the angular acceleration while spinning up?

d)how much torque was required to spin up the grindstone?

e)how much work did it take to spin up the grindstone?

f)what power was required to spin up the grindstone?

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