# Homework Help: How to Solve for atan when an object turns 60 degrees

1. Nov 1, 2012

### TamuNinja

The problem statement, all variables and given/known data

A flywheel with a radius of 0.200 starts from rest and accelerates with a constant angular acceleration of 0.900 .

atan= .180 m/s2 when its at rest
arad= 0m/s2 when at rest
compute magnitude of resultant acceleration at the start a= .180 m/s2

I got all of these already now the question is

Compute the magnitude of the tangential acceleration of a point on its rim after it has turned through 60.0?

atan= ? m/s2

The attempt at a solution

I do not know how to answer this. I honeslty dont know where to start.

I know atan= $\alpha$*radius but i dont know what to do now that the flywheel is turning 60

2. Nov 1, 2012

### TamuNinja

Solved it.

Turned out that i didnt need to worry about how far it moved so it was just Alpha*radius

Giving me atan=.180m/s^2