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Math Help - [SOLVED] finding angular acceleration

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    [SOLVED] finding angular acceleration

    A cyclist accelerates uniformly from rest. After 8.0s the wheels have rotated 3 rev. What is the angular acceleration of the wheels?

    Answer: 0.59rad/s^2

    this is what I did: \theta = \theta_o +\omega_o t + \frac{1}{2} \alpha t^2 \Leftrightarrow \alpha=\frac{2\theta}{t^2}=\frac{2(3(2\pi)))}{(8s)  ^2}

    stupid me I forgot one of the 2xPi
    Last edited by superdude; April 20th 2010 at 04:46 PM.
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