# Angular Acceleration (radius)

`alpha = a/r`

Angular acceleration calculator from tangential acceleration and radius in a rotational motion.

Angular acceleration calculator from tangential acceleration and radius in a rotational motion.

**Enter 'x' in the field to be calculated.**This tool is a calculator of angular acceleration from tangential velocity and radius. It applies to an object in a rotational motion.

`alpha = a / r`

`alpha` : angular acceleration in rad/s^{2}

a : tangential velocity in m/s^{2}

r : radius or distance of the object from the center of rotation in meter (m)

## See also

Motion Calculators

Physics Calculators