## Question:

Assuming that the motor shown has an efficiency $\epsilon$ = 0.80, determine the power to be supplied to the motor if it is to pull a 250 lb crate up the incline with a constant speed $\upsilon$ = 7 ft/s. Assume that the kinetic friction coefficient between the slide and the crate is ${ \mu }_{ k }$ = 0.25 and that $\theta$ =28°.