Rotational Inertia and Rotational Kinetic Energy

The tendency of an object to resist changes in motion

The amount of force required to move an object

The speed at which an object moves

The energy stored in a moving object

It is the resistance to change in its state of angular/rotational motion.

It is the force required to start rotation.

It is the speed of rotation of an object.

It is the energy stored in a rotating object.

It increases with mass.

It increases with distance from the pivot.

It is the rotational equivalent of mass.

It is independent of the shape of the object.

Mass and distance from the pivot

Speed and mass

Force and acceleration

Shape and color

Rotational inertia, which determines how difficult it is to change an object's rotational motion

Linear momentum, which is unrelated to rotational motion

Thermal energy, which is not demonstrated here

Elasticity, which refers to deformation and not rotation

1025 kg·m²

525 kg·m²

1500 kg·m²

1000 kg·m²

Sphere has the lowest moment of inertia and reaches the bottom first.

Ring has the highest moment of inertia and reaches the bottom last.

Disc has the same moment of inertia as the sphere.

All objects have equal resistance to rotation.

Ring

Disc

Sphere

All reach at the same time