Question

A body of mass 10kg is to be raise from the bottom to the top of an inclined plane 5m long and 3.0m off the ground at the top assuming a frictionless surface,how much work must be done by the force parallel to the plane pushing the block up to a constant speed?

Answer 1

whether it is slid up or lifted up , the work is equal to the change in gravitational potential energy ... m g h