A weightlifter performing a bench press exercise with dumbbells has lost control of the weight on the left side such that the weight has tipped forward as shown below. A free body diagram of the left arm is also shown below. Calculate how much force the left deltoid muscle must bear to maintain the weight in rotational equilibrium about the left shoulder joint, which is a hinge.

A weightlifter performing a bench press exercise with dumbbells has lost control of the weight on the left side such that the weight has tipped forward as shown below. A free body diagram of the left arm is also shown below. Calculate how much force the left deltoid muscle must bear to maintain the weight in rotational equilibrium about the left shoulder joint, which is a hinge.

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A weightlifter performing a bench press exercise with dumbbells has lost control of the weight on the left side such that the weight has tipped forward as shown below. A free body diagram of the left arm is also shown below. Calculate how much force the left deltoid muscle must bear to maintain the weight in rotational equilibrium about the left shoulder joint, which is a hinge.

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