Mechanics

Rotational Kinematic 2

Rotational analog of x = x₀ + v₀t + ½at². Relates angular position to time.

Variables

θ
Final angle
Angular position at time t
rad
θ₀
Initial angle
Angular position at t=0
rad
ω₀
Initial angular velocity
Angular velocity at t=0
rad/s
α
Angular acceleration
Constant angular acceleration
rad/s²
t
Time
Elapsed time
s

Derivation

Integrate ω = ω₀ + αt: θ = ∫ω dt = ω₀t + ½αt² + θ₀.

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