Approximate the work required to lift a 2.5-kg object to a height of 6.0 meters. a student applies a force to a cart to pull it up an inclined plane at a constant speed during a physics lab. a force of 20.8 n is applied parallel to the incline to lift a 3.00-kg loaded cart to a height of 0.450 m along an incline which is 0.636-m long. determine the work done upon the cart and the subsequent potential energy change of the cart. eddy, whose mass is 65-kg, climbs up the 1.6-meter high stairs in 1.2 s. approximate eddy's power rating.