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Question: The chin - up is one exercise that

The chin - up is one exercise that can be used to strengthen the biceps muscle. This muscle can exert a force of approximately 8.00 x 102 N as it contracts a distance of 7.5 cm in a 75 - kg male.3
(a) How much work can the biceps muscles (one in each arm) perform in a single contraction?
(b) Compare this amount of work with the energy required to lift a 75 - kg person 40. cm in performing a chin - up.
(c) Do you think the biceps muscle is the only muscle involved in performing a chin - up?


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