ROTATIONAL MOTION
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10 Terms
Rotational Motion
Refers to the motion of an object that spins around an axis.
Angular Displacement
The angle through which an object rotates about a fixed axis.
Angular Velocity
The rate of change of angular displacement, usually measured in radians per second (rad/s).
Angular Acceleration
The rate of change of angular velocity, measured in radians per second squared (rad/s²).
Torque
The rotational equivalent of linear force, calculated as τ = r × F.
Moment of Inertia (I)
The measure of an object's resistance to changes in its rotational motion.
Conservation of Angular Momentum
The angular momentum of a closed system remains constant if no external torque acts on it.
Angular Displacement Equation
θ = θ₀ + ω₀t + 1/2αt².
Angular Velocity Equation
ω = ω₀ + αt.
Angular Momentum Equation
L = Iω.
