What is the definition of torque?
Torque is a rotational force that causes an object to rotate. It is the rotational analog of linear force.
What is the definition of angular momentum (L)?
Angular momentum (L) is the measure of an object's rotational motion. It's the rotational equivalent of linear momentum.
Define moment of inertia (I).
Moment of inertia (I) is the resistance of an object to changes in its rotational motion.
What is angular velocity (ฯ)?
Angular velocity (ฯ) is the rate at which an object is rotating, measured in radians per second.
What is the definition of angular impulse?
Angular impulse is the change in angular momentum of an object, equal to the average torque multiplied by the time interval over which it acts.
What are the key differences between linear momentum and angular momentum?
Linear Momentum: associated with translational motion, formula p=mv | Angular Momentum: associated with rotational motion, formula L=Iฯ
What are the key differences between force and torque?
Force: causes linear acceleration, measured in Newtons | Torque: causes angular acceleration, measured in Newton-meters
What are the key differences between linear impulse and angular impulse?
Linear Impulse: change in linear momentum, calculated as force ร time | Angular Impulse: change in angular momentum, calculated as torque ร time
What are the key differences between linear velocity and angular velocity?
Linear Velocity: rate of change of position, measured in m/s | Angular Velocity: rate of change of angular position, measured in rad/s
What are the key differences between mass and moment of inertia?
Mass: resistance to linear acceleration | Moment of Inertia: resistance to angular acceleration
What happens when a net torque is exerted on a system?
The angular momentum of the system changes.
What is the effect of a positive (counterclockwise) torque?
It increases the angular momentum in the counterclockwise direction.
What is the effect of a negative (clockwise) torque?
It increases the angular momentum in the clockwise direction.
What happens when an ice skater pushes off the ice?
The skater's angular momentum changes due to the external interaction, causing them to speed up or slow down their rotation.
What is the effect of applying a torque over a time interval ฮt?
It causes a change in angular momentum, described by the equation ฮL = ๐_avg * ฮt.
