Rotational Dynamics

Definition

Rotational dynamics refers to the study of how objects rotate around an axis under the influence of torques (rotational forces). It involves concepts such as angular velocity, moment of inertia, and torque.

Analogy

Think about riding a bicycle. When you pedal harder, you apply more torque to make the wheels rotate faster. Similarly, in rotational dynamics, applying more torque causes objects to rotate with greater angular velocity.

Related terms

Angular Velocity: Angular velocity measures how fast an object rotates around an axis and is usually expressed in radians per second.

Moment of Inertia: Moment of inertia quantifies an object's resistance to changes in its rotational motion and depends on its mass distribution.

Torque: Torque is a measure of how effectively a force can cause rotation and can be calculated by multiplying force applied perpendicular to a lever arm by its length.