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## Homework Statement

A cyclist starts from rest and pedals so that the wheels make 8.5 revolutions in the first 4.5 s. What is the angular acceleration of the wheels (assumed constant)?

## Homework Equations

[tex]\alpha[/tex] = [tex]\Delta[/tex][tex]\omega[/tex]/ [tex]\Delta[/tex]t

## The Attempt at a Solution

I converted 8.5 to radians and divided by 4.5. BUT I CANT GET THE RIGHT ANSWER!!