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In the right-hand rule diagram for angular momentum, what do the fingers, curl, and thumb represent?
Fingers: direction of $\vec{r}$, Curl: direction of $\vec{p}$, Thumb: direction of $\vec{L}$
What is Angular Momentum?
The tendency of an object to keep rotating; the rotational version of linear momentum. A vector quantity with magnitude and direction.
Define Moment of Inertia.
The resistance of an object to rotational motion (kg·m²).
What is Angular Velocity?
The rate at which an object is rotating or revolving, measured in radians per second (rad/s).
Define Angular Impulse.
The change in angular momentum caused by a torque acting over a time interval.
What is Torque?
A rotational force (N·m).
What is the Impulse-Momentum Theorem for Rotation?
The angular impulse equals the change in angular momentum: $\Delta L = \int_{t_1}^{t_2} \tau , dt $
Define angular momentum.
The 'rotational oomph' of an object; the tendency of a rotating object to keep rotating.
What is moment of inertia?
A measure of how hard it is to change an object's rotation.
Define angular velocity.
How fast an object is spinning.
What is torque?
Rotational force that causes things to rotate.
Define angular impulse.
The product of torque and time; what changes an object's angular momentum.
What is net torque?
The sum of all torques acting on an object.
What is angular acceleration?
The rate of change of angular velocity.