Two muscles develop tension simultaneously on opposite sides of a joint. Muscle A, attaching 3cm from the axis of rotation at the joint, exerts 250N of force. Muscle B, attaching 2.5cm from the joint axis exerts 260N of force. How much torque is created at the joint by each muscle? What is the net torque created at the joint? In which direction will motion at the joint occur?

How is torque determined? Once you determine that, you will see that multiplication figures in.