Posted by **Anonymous** on Saturday, January 14, 2012 at 3:43pm.

a book on a shelf 2.0 meters above the floor has a mas of 1.5 kilograms. what is the gravitational potential energy of the book.

- physics -
**drwls**, Saturday, January 14, 2012 at 8:54pm
The gravitional potential energy is M*g*H , assuming zero energy is defined as the value at the floor.

g is the acceleration of gravity, 9.8 m/s^2, which you should already be familiar with.

All you have to do is multiply those three numbers. The answer will have units of Joules.

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