Rotational/Tangential Motion Problem

[richylai]

Homework Statement

A flywheel with a radius of 0.300 m starts from rest and accelerates with a constant angular acceleration of 0.600 rad/s^2.

a)Compute the magnitude of the tangential acceleration, the radial acceleration, and the resultant acceleration of a point on its rim at the start.
b)Compute the magnitude of the tangential acceleration, the radial acceleration, and the resultant acceleration of a point on its rim after it has turned through 60.0 degrees.

Homework Equations

A_tan=alpha*r
A_resultant=sqrt(A_tan^2+A_rad^2)

The Attempt at a Solution

For part a) I used A_tan=alpha*r to get A_tan and A_rad is always the same (given), and for the A_resultant I used A_resultant=sqrt(A_tan^2+A_rad^2)
I have a feeling that I'm not finding the A_tangential right.

 

[richylai]

Oh nevermind, I'm sorry, admin you may delete this post, I figured it out.