Question: During a single arm shoulder press with (35 kg) the shoulder abductor muscles exert a torque of 74.0 Nm. Find the net joint reaction force

During a single arm shoulder press with (35 kg) the shoulder abductor muscles exert a torque of 74.0 Nm. Find the net joint reaction force if the net muscle force is pulling at an angle of 37 degrees below the right horizontal and the muscle moment arm is 0.038 m. Assume the arm is momentarily in a static position, and the arm weighs 7 kg. (define upward force and force to the right as positive) Answer to the nearest N. 

Hint: Use the Pythagorean theorem with vertical and horizontal shoulder joint reaction forces.

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To find the net joint reaction force in the shoulder press exercise we need to consider the forces acting on the arm at the shoulder joint Given Mass ... View full answer

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