22 (a) What is the constant torque which must be applied to a flywheel weighing 400 lb and having an effective radius of 2.00 ft if starting from rest and moving with uniform angular ac- celeration, it develops an angular speed of 1,800 r/min in 10.0 s? (b) If the shaft on which the pulley is mounted has a radius of 6.00 in and there is a tangential frictional force of 20.0 1b, how much must be the total torque? Ans. 942 ft - 1b; 952 ft - 1b