Assuming that the motor shown has an efficiency ϵ = 0.80, determine the power to be suppli...

Assuming that the motor shown has an efficiency ϵ = 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 υ = 7 ft/s. Assume that the kinetic friction coefficient between the slide and the crate is μk = 0.25 and that θ = 28°.

Figure P4.80