Rotational dynamics: Putting it all together Triceps and darts Your upp...

Rotational dynamics: Putting it all together

Triceps and darts Your upper arm is horizontal and your forearm is vertical with a 0.010-kg dart in your hand (Figure P8.65). When your triceps muscle contracts, your forearm initially swings forward with a rotational acceleration of 35 rad/s². Determine the force that your triceps muscle exerts on your forearm during this initial part of the throw. The rotational inertia of your forearm is 0.12 kg . m² and the dart is 0.38 m from your elbow joint. You triceps muscle attaches 0.03 m from your elbow joint.