1. The problem statement, all variables and given/known data A grinding wheel is a uniform cylinder with a radius of 10.0 cm and a mass of 0.570 kg. Calculate its moment of inertia about its center. 2.85 x 10^-3 kg * m^2 Calculate the applied torque needed to accelerate it from rest to 1700 rpm in 4.80s if it is known to slow down from 1700 rpm to rest in 57.0s . 2. Relevant equations I = 1/2 Mr^2 ω final - ω initial / t = α τ = Iα 3. The attempt at a solution 1700 rpm = 178.02 rad./s τ = Iα τ = (2.85 * 10^-3 kg * m^2)(37.0815 rad./s^2) = 0.1056 N*m (Accelerating from rest to 1700 rpm in 4.80 s) τ = (2.85*10^-3 kg * m^2)(-3.123 rad./s^2) = -0.00890 N*m (Decelerating from 1700 rpm to rest in 57.0s) I have these two torques and I'm unsure of what to do with them.