Tangential and Radial Acceleration

A flywheel with a radius of \(0.3\)m starts from rest and accelerates with a constant angular acceleration of \(0.6 rads^{-2}\). Compute the magnitude of the tangential, radial acceleration of a point on its rim at the start.


The flywheel has radius \(0.3\)m and starts from rest and accelerates with a  constant angular acceleration of \(0.6 rads^{-2}\).

The tangential acceleration $$ a_{tan}=r\alpha=(0.3)(0.6)=0.18m/s^2$$
Radial acceleration $$a_{rad}=0$$ since the flywheel starts from zero.

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