A grinding wheel is a uniform cylinder with a radius of 8.60 cm and a mass of 0.570 kg.?

Question

A grinding wheel is a uniform cylinder with a radius of 8.60 cm and a mass of 0.570 kg.

(a) Calculate its moment of inertia about its center.

-----kg·m2

(b) Calculate the applied torque needed to accelerate it from rest to 1600 rpm in 6.00 s if it is known to slow down from 1600 rpm to rest in 57.0 s.

-----m·N

Answer 1

Not sure about b but a is 42.1572kgm2