By considering the torques about the centers of the ball

Reference no: EM13672084

By considering the torques about the centers of the ball joints in your shoulders, estimate the force your deltoid muscles (those muscles on top of the shoulder) should exert on your upper arm to keep your arm held out and extended at shoulder level. Then, estimate the force they should exert when you hold a 10-lb weight out to the side at arm’s length.

Reference no: EM13672084

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