Aparticular automotive wheel has an angular moment of inertia of 12 kg*m^2, and is decelerated from 135 rpm to 0 rpm in 8 seconds. a. how much torque is required to do this? b. how much work is done to accomplish this?

(A) Torque required is 21.205 N-m

(b) Wok done will be equal to 1199.1286 j

Explanation:

We have given moment of inertia

Wheel deaccelerate from 135 rpm to 0 rpm

135 rpm =

Time t = 8 sec

So angular speed and

Angular acceleration is given by

Torque is given by torque

Work done to accelerate the vehicle is