Calculate the gravitational potential energy of a 0.240-kg ball located 55.1 meters above the zero level.

A 1.89-kg ball hangs at the end of a string 1.22 meters in length from the ceiling of a room. The height of the room is 3.49 meters. What is the gravitational potential energy of the ball relative to the floor?

Upon arriving in Physics class, Jeremy lifts a 1.93-kg book from the floor to his 0.80-meter high desktop. What is the potential energy of the book relative to the floor?

The new furniture for the English Department's Writer's Lounge has just arrived and is down at the loading dock. A 206-Newton force is used to pull a 37.6-kg furniture crate up the loading dock to a height of 4.11 meters at a constant speed. Determine the increase in potential energy of the crate.

In an effort to impress Mr. Hass during PE class, Avery quickly elevates his 63.6-kg body up the rope to a height of 5.71 meters above his starting point. What is Avery's change in potential energy?

A weightlifter raises a 151-kg barbell to a height of 2.00 meters. What is the increase in the potential energy of the barbell?

A spring a has a force constant of 405 N/m. If the spring is stretched 4.66 cm from the equilibrium position, then what amount of elastic potential energy is stored in the spring?

The diagram at the right shows six positions of a 0.43-kg ball bouncing across a 3.4-meter-high physics room. Information regarding the vertical position is shown. Assume that the floor is the reference level for zero potential energy.