Johnny Manziel has decided that he’s a terrible quarterback (he’s pretty mad about it) and wants to become a kicker, but he’s concerned about the shoe he has chosen to kick with and how it will impact the inertia of his leg. The moment of inertia of the lower leg and foot about an axis through the knee joint is 0.20 kg·m2. What is the moment of inertia of the leg and foot about the knee joint if a 0.50 kg shoe is worn on the foot? Assume that the shoe’s mass is all concentrated in one point 45 cm from the knee joint. 0.30 kg·m2

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.