Below is a diagram of a human arm. 5.0 cm F, M -15 cm- -35 cm- W. B The forearm is lifted by the biceps muscle, which is attached approximately 5.0 cm from the joint. Champion athletes are often found to have muscle attachments farther from the joint than the average person (5.5 cm). (a) Why does this small change in the muscle attachment position give an advantage when lifting or throwing? Explain clearly, referring to the above diagram.108

Elements Of Electromagnetics
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(b) For an average person, if the mass in the hand is 4.0 kg, and the mass of the forearm is 1.5
kg, what bicep force FM must be applied?¹09
(c) For a champion athlete with forearm 2.5 kg, what mass in the hand can be held with the
same force as in (b)?110
Transcribed Image Text:(b) For an average person, if the mass in the hand is 4.0 kg, and the mass of the forearm is 1.5 kg, what bicep force FM must be applied?¹09 (c) For a champion athlete with forearm 2.5 kg, what mass in the hand can be held with the same force as in (b)?110
Below is a diagram of a human arm.
5.0 cm
F
M
-15 cm-
Ꮃ .
A
-35 cm-
W
B
The forearm is lifted by the biceps muscle, which is attached approximately 5.0 cm from the
joint.
Champion athletes are often found to have muscle attachments farther from the joint than the
average person (5.5 cm).
(a) Why does this small change in the muscle attachment position give an advantage when
lifting or throwing? Explain clearly, referring to the above diagram.10
108
Transcribed Image Text:Below is a diagram of a human arm. 5.0 cm F M -15 cm- Ꮃ . A -35 cm- W B The forearm is lifted by the biceps muscle, which is attached approximately 5.0 cm from the joint. Champion athletes are often found to have muscle attachments farther from the joint than the average person (5.5 cm). (a) Why does this small change in the muscle attachment position give an advantage when lifting or throwing? Explain clearly, referring to the above diagram.10 108
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