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Materials: plastic ruler and table Procedure:

1. On the table, place the ruler flat such that three-fourths of it extends over the edge and the rest is held in place by your hand. 2. Using your other hand, slightly bend the free end of the ruler and then

release it.

Questions:

1. When you bent the ruler, what form of energy do you think did it acquire?

2. What happened to the ruler when you released its bent end?

What happened to the acquired energy of the ruler when you released its bent end?