what does a free body diagram involving torque look like?
This is a free body diagram of a yo-yo resting on a table.
The force of gravity acting on the yo-yo (green arrow) is pulling downward on the yo-yo as it would on any object in ideal circumstances.
The force of the table is the normal force (yellow arrow) reacting to the weight of the yo-yo on the table.
The tension being applied to the yo-yo (black arrow) is comprised of a vertical component and horizontal component that pull the yo-yo "upward" and to the "right"
The frictional force (red arrow) pulls the yo-yo in the opposite direction of the horizontal component of the tension (black arrow).