The machine B is beltdriven by the electric motor A that has

The machine B is belt-driven by the electric motor A that has an efficiency of 85%. When the motor is running at 25 rad/s, the tension in the upper part of the belt is 20 lb greater than in the lower part. Determine the power consumption of the motor in horsepower (hp).

Solution

Power =angular speed* Torque

0.85*P = 25*[20*(15/12)]

0.85 * P = 625

P = 735.29 lb*ft/s

P = 1.337 hp