A small plastic building brick (like a Lego piece)…

asked May 5, 2017 in Biology by cata3
A small plastic building brick (like a Lego piece) and a ceramic piggy bank filled with coins are displayed on the same shelf. Which has more potential energy? Why?

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answered May 5, 2017 by anonymous
Potential energy = mass x g x height (where g is the acceleration due to gravity). Since ceramic generally has a higher density compared to plastic, the ceramic piggy has more mass, hence has more potential energy. 

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