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**[SOLVED] Two wheels and angular acceleration**

## Homework Statement

In the figure below, wheel A of radius rA = 11 cm is coupled by belt B to wheel C of radius rC = 25 cm. The angular speed of wheel A is increased from rest at a constant rate of 1.6 rad/s2. Find the time needed for wheel C to reach an angular speed of 120 rev/min, assuming the belt does not slip. Linear speeds of two rims must be equal.

## Homework Equations

v=wr; a= w(squared)r

## The Attempt at a Solution

v=wr so v1=v2? Then I tried to use this equation w(squared)r=a And then tried using the angular acceleration equations(that are like the kineticmatics equations). The answers I got using these equations though I think should be wrong because the acceleration is give above. Can someone help explain the concept. I can do the brute work if I know.