All Flashcards
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 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.
What is the effect of applying a torque to an object?
The object experiences angular acceleration.
What happens when a spinning skater pulls their arms inward?
Their moment of inertia decreases, and their angular velocity increases (angular momentum remains constant).
What is the effect of a net torque acting on an object over time?
The object's angular momentum changes.
What happens when angular impulse is applied to a rotating object?
The object's angular momentum changes.
What is the effect of increasing the distance (r) of a point object from a reference point on its angular momentum?
The angular momentum increases (assuming other variables remain constant).
What happens to the angular momentum if no external torque acts on a system?
The angular momentum of the system remains constant (conservation of angular momentum).