Question: In the cylinder and mass combination described in Example 9.9 (Section 9.4), suppose the fa1ling mass m is made of ideal rubber, so that no

In the cylinder and mass combination described in Example 9.9 (Section 9.4), suppose the fa1ling mass m is made of ideal rubber, so that no mechanical energy is lost when the mass hits the ground.
(a) If the cylinder is originally not rotating and the mass m is released from rest at a height h above the ground, to what height will this mass rebound if it bounces straight back up from the floor?
(b) Explain, in terms of energy, why the answer to part (a) is less than h.

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