The forearm shown below is positioned at an angle $$ with respect to the upper arm, and a $5\mathrm{.}0-kg$ mass is held in the hand. The total mass of the forearm and hand is $3\mathrm{.}0$ kg $,$ and their center of mass is $1$ from the elbow. What is the magnitude of the force that the biceps muscle exerts on the forearm for $=60?$

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Incorrect.

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What is the magnitude of the force on the elbow joint for the same angle?

Do these forces depend on the angle $?$

No Yes

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