The person whose leg is shown in figure below kicks his leg by exerting a 2000N force with his upper leg muscle. The effective perpendicular lever arm is 2.20 cm. Given the moment of inertia of the lower leg is 1.25 , what is the rotational kinetic energy, in joules, of the leg after it has rotated through 43 degree ?

The person whose leg is shown in figure below kicks his leg by exerting a 2000N force with his upper leg muscle. The effective perpendicular lever arm is 2.20 cm. Given the moment of inertia of the lower leg is 1.25 , what is the rotational kinetic energy, in joules, of the leg after it has rotated through 43 degree ?