A wheel of radius `15 cm` is rotating about its axis at angluar speed of `20 rad//s`. Find the linear speed and total acceleration of a point on the rim.

Explanation

The wheel is in pure rotation about a fixed axis.

Lined speed
`v=r omega=0.15xx20=3 m//s`
Centripetal acceleration
`a_(c)=omega^(2)r=20xx20xx0.15=60 m//s^(2)`