All Flashcards
In the right-hand rule diagram for angular momentum, what do the fingers, curl, and thumb represent?
Fingers: direction of , Curl: direction of , Thumb: direction of
What is the difference between angular momentum of a rigid object and a point object?
Rigid Object: , depends on moment of inertia and angular velocity. | Point Object: , depends on distance, mass, velocity, and angle.
How do angular impulse and linear impulse differ?
Angular Impulse: Changes rotational motion; involves torque and time. | Linear Impulse: Changes linear motion; involves force and time.
Compare and contrast torque and force.
Torque: Rotational force; causes angular acceleration. | Force: Linear force; causes linear acceleration.
How are angular momentum and linear momentum related?
Angular Momentum: 'Rotational oomph'; resistance to changes in rotational motion. | Linear Momentum: 'Linear oomph'; resistance to changes in linear motion.
What is the relation between angular impulse and change in angular momentum?
Angular Impulse: The cause of change in rotational motion. | Change in Angular Momentum: The effect of angular impulse.
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.