What is angular acceleration
Answers
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Angular acceleration, also called rotational acceleration, is a quantitative expression of the change in angular velocity that a spinning object undergoes per unit time. It is a vector quantity, consisting of a magnitude component and either of two defined directions or senses.
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Angular acceleration is the time rate of change of angular velocity. In three dimensions, it is a pseudovector. In SI units, it is measured in radiansper second squared (rad/s2), and is usually denoted by the Greek letter alpha (α).[1]
Radians per second squaredUnit systemSI derived unitUnit ofAngular accelerationSymbolrad/s2 or rad⋅s−2
Mathematical definitionEdit
The angular acceleration vector is defined as:
{\displaystyle {\boldsymbol {\alpha }}={\frac {d{\boldsymbol {\omega }}}{dt}}},
where {\displaystyle {\boldsymbol {\omega }}} (omega) is the angular velocity vector.
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