ROTATIONAL MOTION

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Last updated 5:02 PM on 2/13/25
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10 Terms

1
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Rotational Motion

Refers to the motion of an object that spins around an axis.

2
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Angular Displacement

The angle through which an object rotates about a fixed axis.

3
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Angular Velocity

The rate of change of angular displacement, usually measured in radians per second (rad/s).

4
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Angular Acceleration

The rate of change of angular velocity, measured in radians per second squared (rad/s²).

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Torque

The rotational equivalent of linear force, calculated as τ = r × F.

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Moment of Inertia (I)

The measure of an object's resistance to changes in its rotational motion.

7
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Conservation of Angular Momentum

The angular momentum of a closed system remains constant if no external torque acts on it.

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Angular Displacement Equation

θ = θ₀ + ω₀t + 1/2αt².

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Angular Velocity Equation

ω = ω₀ + αt.

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Angular Momentum Equation

L = Iω.