Dynamics of Rotational Motion: Rotational Inertia (Problem 12)

The triceps muscle in the back of the upper arm extends the forearm. This muscle in a professional boxer exerts a force of $2.00\times {10}^3\text{N}$ with an effective perpendicular lever arm of 3.00 cm, producing an angular acceleration of the forearm of $120{\text{rad/s}}^2$. What is the moment of inertia of the boxer’s forearm?