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whether pitching a softball or throwing a bowling ball is more stressful to the human shoulder....

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Physics

whether pitching a softball or throwing a bowling ball is morestressful to the human shoulder. find the force exerted the musclein each scenario to come up with an answer.

assumptions:
for bowling ball:
the weight of the bowling ball is 7.27kg
radius of arm =.6
weight of arm is 4 kg
this is an underhanded throw
For softball:
the arm rotates 360 degress (windmill motion)
it is an overhand pitch
weight of a softball is .198kg
weight of arm=4 kg

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