1. The problem statement, all variables and given/known data A 2.40 kg ball is attached to a ceiling by a 2.00 m long string. The height of the room is 3 m. What is the gravitational potential energy of the ball relative to: a) the ceiling? b) the floor? c) a point at the same elevation as the ball? Variables P for potential energy m for mass in kg g for gravity h for height 2. Relevant equations P=mgh 3. The attempt at a solution For b), I found the answer which was 23.52. For a), though, I got 70.56 because P=(2.4)(9.8)(3)=70.56. The 3 is from the fact that the ceiling is 3m off the ground and a) is asking about the ceiling. It says that I'm wrong For c), I don't have any idea of what they're talking about. Is it the same thing as b)?