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The forearm of a person has a moment of inertia of 0.08 kgm^2 about the elbow...

The forearm of a person has a moment of inertia of 0.08 kgm^2 about the elbow joint. the forearm is held vertically and the bicep muscles exerts a horizontal force on the forearm at a perpendicular distance of 2.1 cm from the elbow's rotation axis. if the forearm has the resulting angular acceleration of 1.2 rad/s^2, what is the magnitude of the biceps muscle's force?

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