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A flywheel makes 80 radians in 4 second and is rotating with constant angular acceler

  1. Jun 3, 2012 #1
    A flywheel makes 80 radians in 4 second and is rotating with constant angular acceleration during this time . It makes 60 radians in next 4 second with constant angular velocity .
    Find initial angular velocity and the angular acceleration ?

    my answer is

    form this equation
    Q= w0t + 1/2at^2
    80 = w0(4) + 1/2(a)(4)^2 ==== 1
    w = w0 + at
    15 = w0 + a(4) ========= 2

    so from this two equation we find a and v
     
  2. jcsd
  3. Jun 4, 2012 #2

    ehild

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    Re: A flywheel makes 80 radians in 4 second and is rotating with constant angular acc

    Write the equation for Q after the additional 4 s time.

    ehild
     
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