What is the gravitational potential energy of a # 9 kg# object on a shelf # 8/9 m # high?

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1 Answer
Gió
May 10, 2018

I tried this:

Explanation:

Gravitational Potential Energy #U# is energy stored by our system in doing work against the gravitational force (or Weight, #W=mg#) lifting an object to a certain height #h# with respect, say, the ground taken as zero reference.
We get:

#W=mgh=cancel(9)*9.8*8/cancel(9)=78.4J#

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