1.What is the maximum tension they can produce in the Achilles tendon? (Muscles

Question

1.What is the maximum tension they can produce in the Achilles tendon? (Muscles are attached to bones by means of tendons. The maximum force that a muscle can exert is directly proportional to its cross-sectional area A at the widest point. We can express this relationship mathematically as Fmax=A, where (sigma) is a proportionality constant. Surprisingly, is about the same for the muscles of all animals and has the numerical value of 3.0×105 in SI units.)

2.In one set of experiments, the average maximum force that the gastrocnemius muscle in the back of the lower leg could exert was measured to be 744 N for healthy males in their midtwenties. What does this result tell us was the average cross-sectional area, in cm2, of that muscle for the people in the study?

Explanation / Answer

1 ans :

F = sigma * A

=3.0×10^5*46.0*10^-6

=13.6

2 ans:

744 / (3.0×10^5)

=24.8 cm^2

note:for young women is 46.0mm^2. So using the formula the force maximum for this particular person is 13.6 in SI units.The answer is variable to the cross-sectional area of the achilles tendon, which is largely variable to the person.

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