Some of the energy you use to push the hanger backwards
and forwards is being converted into heat energy.
IDEERS Inelastic Deformation Experiments - 3
Make Repeated Inelastic Deformations
Hold the hook side of the hanger firmly again. Now push the originally
straight section backwards and forwards very quickly and so hard
that it bends out of shape in both directions.
As you do this, you should feel the wire getting hotter
(Why?).
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