A weight lifter raises a 100 kg barbell to a height of 2 m. what is the barbell's potential energy? Calculate answer to one decimal.

A force of 12.0 N acts on a 4.6 kg object through a parallel distance of 1.6 m. How much work is done on the object? Your Answer:

The figure below shows a person lifting a box with a mass of 29.8 kg to a height of 1.8 m. Determine the potential energy gained by the the box in Joules.

Captain America pushes a car out of the way with 1000 N of force. He manages to move it 8 meters. How much work does he do on the car?

A weight lifter raises a 170 kg barbell from the ground to a height of 1.5 m. What is the barbell's potential energy (in J)? (Calculate the potential energy relative to the ground.) 1 DETAILS

A 10 kg barbell is rolling down a hill. There is no friction or air resistance acting on it, only the force of gravity. If it starts out moving 2 ms1, and ends up moving 7 ms1, then how much work does gravity do on it?

A heavy rope, 50 ft long, weighs 0.3 lb/ft and hangs over the edge of a building 140 ft high. (a) How much work W is done in pulling the rope to the top of the building? W = ft-lb (b) How much work W is done in pulling half the rope to the top of the building? W = ft-lb

How much potential energy due to gravity would a person have if he is standing on top of the building that is 1000 cm high? Assume that he has a mass of 50 kg.

How much potential energy does a person of mass 82kg have if they are standing at the top of a building that is 59.6 m high? sumbit your answer is exponential form.

An archer pulls a bow string back 0.40 m by exerting a force that increases linearly from zero to 460 N.  How much work does the archer do?