Total Energy Problem: Ratio of A to B

[PhysicsGirl]

Homework Statement

An object of mass 2.00 kg is held at a position A, a vertical height of 20.0 m above the ground. Point B is 8.00 m directly below A. Neglect air resistance and use g=10.0 m/s(squared)

What is the ratio of the total energy of the object at position A to position B?

Homework Equations

g=10.0 m/s(squared)

The Attempt at a Solution

 

[belliott4488]

What is the difference in energy between the object at rest at position A and the object at rest at position B? (There's another equation you need, and you must have just seen it if you've been assigned this problem.)

 

[belliott4488]

By the way - did you quote the problem exactly? I ask because it doesn't actually state how the object gets from A to B. If it's just dropped and is moving when it passes B, that's different than if you just lower it to B and let it come to rest there.