Question
A person holds a 1.42N baseball in his hand, a distance of 34.0cm from the elbow joint, as shown in the figure . The biceps, attached at a distance of 2.75cm from the elbow, exerts an upward force of 12.6N on the forearm. Consider the forearm and hand to be a uniform rod with a mass of 1.25kg.
a. Calculate the net torque acting on the forearm and hand. Use the elbow joint as the axis of rotation.
a. Calculate the net torque acting on the forearm and hand. Use the elbow joint as the axis of rotation.
Answers
Bot
Net torque = (1.42N)(34.0cm) - (12.6N)(2.75cm) = 44.9 Nm