All Flashcards
What is angular displacement ()?
How much something has rotated, measured in radians.
What is angular velocity ()?
How fast something is rotating, measured in rad/s.
What is angular acceleration ()?
How quickly the rotation rate is changing, measured in rad/s².
What is torque ()?
A twisting force that causes rotation; the rotational equivalent of force, measured in N·m or J.
What is moment of inertia (I)?
Resistance to rotational motion, measured in kg·m².
What is rotational kinetic energy (Krot)?
Energy of rotation, measured in Joules (J).
What is angular momentum (L)?
Measure of rotational motion, measured in kg·m²/s.
What is angular displacement ()?
How much an object has rotated, measured in radians.
What is angular velocity ()?
The rate of change of angular displacement, measured in rad/s.
What is angular acceleration ()?
The rate of change of angular velocity, measured in rad/s².
What is torque ()?
A twisting force that causes rotation; the rotational equivalent of force, measured in N·m or J.
What is moment of inertia (I)?
Resistance to rotational motion, measured in kg·m².
What is rotational kinetic energy (Krot)?
Energy of rotation, measured in Joules (J).
What is angular momentum (L)?
Measure of rotational motion, measured in kg·m²/s.
What is the effect of applying a torque to an object?
It causes angular acceleration.
What happens when a figure skater pulls their arms in?
Their moment of inertia decreases, and their angular velocity increases to conserve angular momentum.
What happens to angular momentum in a closed system?
Total angular momentum remains constant.
What is the effect of increasing the radius on the moment of inertia?
Increasing the radius will increase the moment of inertia, making it harder to change the object's rotational motion.
What is the effect of increasing the mass on the moment of inertia?
Increasing the mass will increase the moment of inertia, making it harder to change the object's rotational motion.