**6.2: Angular Acceleration - Physics LibreTexts**
https://phys.libretexts.org/Bookshelves/Conceptual_Physics/Introduction_to_Physics_(Park)/03%3A_Unit_2-_Mechanics_II_-_Energy_and_Momentum_Oscillations_and_Waves_Rotation_and_Fluids/06%3A_Rotation/6.02%3A_Angular_Acceleration

webFeb 20, 2022 · Angular acceleration α is defined as the rate of change of angular velocity. In equation form, angular acceleration is expressed as follows: α = Δω Δt, where Δω is the change in angular velocity and Δt is the change in time. The units of angular acceleration are (rad/s)/s, or rad/s 2. If ω increases, then α is positive.

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