Posted by **Jon** on Friday, April 4, 2008 at 12:08pm.

A student lifts a 1.2 kg bag from her desk, which is 0.59 m high, to a locker that is 2.9 m high. What is the gravitational potential energy of the bag relative to the desk?

PE=mgh

1.2(9.80)(2.9)

= 34.1

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