50 cm Q9: How much force must the biceps muscle exert when a 5.0-kg ball is held in the hand (a) with the arm horizontal, and (b) when the arm is at a 45degree angle? The biceps muscle is connected to the forearm by a tendon attached 5.0 cm from the elbow joint. Assume that the mass of forearm and hand together is 2.0 kg and their CG is as shown. FM CG (2.0 kgjg (5.0 kgig 15 cm- (b) 35 cm (aj

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50cm
Q9: How much force must the biceps muscle exert when a 5.0-kg ball is held in
the hand (a) with the arm horizontal, and (b) when the arm is at a 45degree angle?
The biceps muscle is connected to the forearm by a tendon attached 5.0 cm from
the elbow joint. Assume that the mass of forearm and hand together is 2.0 kg and
their CG is as shown.
FM
CG
(2.0 kg g
(5.0 kgig
15 cm-
(b)
35 cm
(a)
Transcribed Image Text:50cm Q9: How much force must the biceps muscle exert when a 5.0-kg ball is held in the hand (a) with the arm horizontal, and (b) when the arm is at a 45degree angle? The biceps muscle is connected to the forearm by a tendon attached 5.0 cm from the elbow joint. Assume that the mass of forearm and hand together is 2.0 kg and their CG is as shown. FM CG (2.0 kg g (5.0 kgig 15 cm- (b) 35 cm (a)
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