All Flashcards
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.
What is the effect of applying a torque to an object?
It causes a change in angular momentum.
What happens if the moment of inertia of a spinning object decreases?
If angular momentum is conserved, the angular velocity increases.
What is the effect of a net torque on angular acceleration?
A net torque causes angular acceleration ().
What happens when angular impulse is applied to an object?
The angular momentum of the object changes.
What is the effect of increasing the distance (r) from the reference point on angular momentum?
The angular momentum increases, assuming other factors remain constant.
What is the difference between linear impulse and angular impulse?
Linear Impulse: Change in linear momentum due to a force over time. | Angular Impulse: Change in angular momentum due to a torque over time.
What is the difference between linear momentum and angular momentum?
Linear Momentum: Mass in motion in a straight line. | Angular Momentum: Tendency of an object to keep rotating.