a-yo-yo-is-released-from-rest-and-it-descends-under-gravity-while-unwinding-whic

Question

A yo-yo is released from rest, and it descends under gravity while unwinding. Which method would you use to determine the speed of its center of mass after falling a certain distance, and why?

Accepted Answer

Use energy methods, because they take into account the conversion of potential energy to kinetic energy.

Answer

Use motion equations, since they provide a direct calculation of velocity.

Answer

Use torque methods, because they directly address the forces involved.

Answer

Use Newton's second law, as it applies to all forces.