Angular acceleration

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Angular acceleration is the rate of change of angular velocity over time. In SI units, it is measured in radians per second squared (rad/s²), and usually denotes by the Greek letter alpha (<math>{\alpha}\,</math>). For constant values of angular acceleration, a rotating body conforms to the rotational equations of motion, in particular:

<math>{\alpha} = \frac{\tau} {I} \,</math>,

where

<math>{\tau}</math> is torque

I is moment of inertia.