A ball at a height of 2.5 m has a potential energy of 56.35 J, measured from the ground.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A ball at a height of has a potential energy of , measured from the ground. What is its mass? ()
Need a reminder? The key ideaShow
Potential energy , with measured from a level we choose. The change in between two heights is the same from any level, and it does not depend on the path.
The worked solution
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Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, compare your working with the solution.
Step 1. .
Answer: .
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