- #1
goluigi2196
- 20
- 0
Homework Statement
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
Homework Equations
P=mgh
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)?