How much torque would the shoulder muscle group in the image need to exert to hold...

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How much torque would the shoulder muscle group in the image need to exert to hold the arm in a static position, if the weight in the hand is 20kg and the total length of the arm is 0.75m? Gravity = -9.81 m/s. 1. 147 Nm CW 2. 15 Nm CW 3. 175 Nm CW 4. 147 Nm CCW 5. 15 Nm CCW 6. 175 Nm CCW How much torque would the shoulder muscle group in the image need to exert to hold the arm in a static position, if the weight in the hand is 20kg and the total length of the arm is 0.75m? Gravity = -9.81 m/s. 1. 147 Nm CW 2. 15 Nm CW 3. 175 Nm CW 4. 147 Nm CCW 5. 15 Nm CCW 6. 175 Nm CCW