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It is the change in the angular velocity, dividedby the change in time. The average angular acceleration isthe change in the angular velocity, divided by the change intime. The angular acceleration is a vector that points in adirection along the rotation axis. The unit of angularacceleration is radians/s2.
Similarly one may ask, is angular acceleration and centripetal acceleration the same thing?
2) Because angular acceleration applies to thewhole rigid object, however, tangential acceleration andcentripetal acceleration are for a specific radius. Nocentripetal acceleration means the object is not moving in acircle. o Centripetal acceleration results from the changein direction of the tangential velocity.
In this regard, what is the relation between angular velocity and angular acceleration?
The angular acceleration is also known asrotational acceleration. It is a quantitative expression ofthe change in angular velocity per unit time. Theacceleration vector, magnitude or length is directlyproportional to the rate of change in angularvelocity.
Torque is a measure of the ability of a force tocause rotation. Just as a net force causesacceleration, a net torque causes angular acceleration,so you can think of torque as the angular equivalent offorce. Torque brings forces into the rotational world.