Pöörlemisenergiat

Pöörlemisenergiat, also known as rotational kinetic energy, is the energy an object possesses due to its rotation. It is a scalar quantity and is dependent on the object's moment of inertia and its angular velocity. The formula for rotational kinetic energy is given by the equation $K_{rot} = \frac{1}{2} I \omega^2$, where $I$ represents the moment of inertia and $\omega$ is the angular velocity. The moment of inertia is a measure of an object's resistance to changes in its rotational motion and depends on the mass distribution of the object relative to its axis of rotation. Angular velocity, on the other hand, describes how fast the object is spinning.

Just as linear kinetic energy is associated with an object's translational motion, rotational kinetic energy is associated with its rotational motion. When an object is rotating, its constituent particles are in motion, and each particle has its own linear kinetic energy. The sum of the kinetic energies of all these particles, taking into account their varying distances from the axis of rotation, results in the object's total rotational kinetic energy. This energy can be transferred to or from other forms of energy during processes involving rotation, such as accelerating or decelerating a spinning object. Examples include a spinning top, a rotating wheel, or a planet orbiting its star.