The crate is being carried up the ramp at constant velocity by a conveyor belt (without sliding).

Crate of potatoes of mass 18.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μ_s  = 0.75 and μ_k = 0.40. Find the normal force (magnitude) and the frictional force (magnitude and direction) on the crate if the crate is being carried up the ramp at constant velocity by a conveyor belt (without sliding).