Post a New Question


posted by .

A centrifuge takes 1 minute to turn through 20 complete revolutions before reaching it's final speed. What is the angular acceleration (assumed constant) and what was it's final angular speed in rpm? How do I solve this without knowing the radius of the centrifuge?

  • physics -

    Let angular acceleration = alpha
    (1/2)*(alpha)*t^2 = 20*2 pi
    = 40*pi radians

    alpha = 80*pi/60^2 = 0.06981 rad/s^2

    Final angular speed = alpha*t = 4.19 rad/s
    = 2*(average angular speed)
    = 2*(40 pi/60)= (4/3)*pi
    (same answer)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question