# Homework Help: A wheel rotates with a constant angular acceleration of 3.30 rad/s2.

1. Mar 4, 2012

### KTANNE

A wheel rotates with a constant angular acceleration of 3.30 rad/s2. Assume the angular speed of the wheel is 2.45 rad/s at ti = 0.
(a) Through what angle does the wheel rotate between t = 0 and t = 2.00 s? Give your answer in radians and revolutions.
(b) What is the angular speed of the wheel at t = 2.00 s?

(a) Find the angle through which the wheel rotates between t = 2.00 s and t = 3.00 s.

I understood the first part and got the correct answers, however, I have tried this problem a few times and came up the wrong answer.... Here are my attempts with wrong answers:

AND

Can someone tell me where I am doing this equation incorrectly? I thought on the second attempt I was spot on, but I'm not.

Thanks!

2. Mar 4, 2012

### tiny-tim

Welcome to PF!

Hi KTANNE! Welcome to PF!
erm

2 seconds !