Question

A 4,410-pound mass [lbm] ball is released from a height of 19.7 feet [ft] above a flat surface on the moon. Gravitational acceleration on the moon is 1.62 meters per second squared [m/s2]. Assume that no energy is lost from frictional drag.

How much Power in Watts [W] will it take to lift the object up to the height of 19.7 feet [ft] in 1.2 minutes [min]? What is the power in horsepower?

Will a 300 Watt Motor with an Efficiency of 75% be able to lift the ball in 1.2 minutes [min]?

Answer 1