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Basic Biomechanics 5th Edition by Susan Hall
النسخة 5الرقم المعياري الدولي: 978-0073044811Basic Biomechanics 5th Edition by Susan Hall
النسخة 5الرقم المعياري الدولي: 978-0073044811 تمرين 18
A 35 N hand and forearm are held at a 45° angle to the vertically oriented humerus. The CG of the forearm and hand is located at a distance of 15 cm from the joint center at the elbow, and the elbow fl exor muscles attach at an average distance of 3 cm from the joint center. (Assume that the muscles attach at an angle of 45° to the bones.)
a. How much force must be exerted by the forearm flexors to maintain this position?
b. How much force must the forearm flexors exert if a 50 N weight is held in the hand at a distance along the arm of 25 cm?
a. How much force must be exerted by the forearm flexors to maintain this position?
b. How much force must the forearm flexors exert if a 50 N weight is held in the hand at a distance along the arm of 25 cm?
التوضيح
موثّق
موثّق
Because the arm is in a static position,...
Basic Biomechanics 5th Edition by Susan Hall
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