Calculate the area under the curve of the graph.

If torque and angular displacement are in the same direction, work is positive. If they are in opposite directions, work is negative.

Linear motion: Work is done by a force over a linear displacement. Rotational motion: Work is done by a torque over an angular displacement. The equations are $W = Fd$ and $W = \tau \Delta \theta$ respectively.

Force: A linear push or pull. Torque: A rotational force that causes an object to rotate. Both can do work.

Angular displacement: The angle through which an object rotates. Linear displacement: The distance an object moves in a straight line.

Mass: Resistance to linear acceleration. Moment of inertia: Resistance to angular acceleration. Moment of inertia depends on the mass distribution relative to the axis of rotation.

Angular velocity: The rate of change of angular displacement. Angular acceleration: The rate of change of angular velocity.

Torque is a rotational force that can transfer energy to or from an object when applied over an angular displacement.

Angular displacement is the angle through which an object rotates.

Work in rotational motion is the energy transferred by a torque acting over an angular displacement.

Moment of inertia is a measure of an object's resistance to changes in its rotational motion.

Rotational kinetic energy is the kinetic energy due to the rotation of an object and is given by $\frac{1}{2}I\omega^2$, where I is the moment of inertia and $\omega$ is the angular velocity.