A large mixer requires a torque of 10 lb-ft when operating under fully loaded conditions. An additional torque is required during startup due to the mixer having a mass moment of inertia of 1.66...

A large mixer requires a torque of 10 lb-ft when operating under fully loaded conditions. An additional torque is required during startup due to the mixer having a mass moment of inertia of 1.66 ft-lb-s2 . How long will it take the 8-in.-diameter drive pulley to accelerate from rest to 90 rpm under loaded conditions if the difference in belt tensions applied to it is 40 lb?