Laboratory Instruments

A centrifuge in a medical laboratory rotates at an angular speed of 3600 rev/min. When switched off, it rotates through 50.0 revolutions before coming to a rest. Find the constant angular acceleration of the centrifuge.

One Comment zu “Rotation Physics Help With Problem?”

1. Rackbran
   1-11-2010 @ 12:48

   Let:
   w1 be angular velocity,
   alpha be angular acceleration,
   theta be the rotation.
   0 = w1^2 + 2 alpha theta
   alpha = – w1^2 / (2 theta)
   = – (2pi * 3600 / 60)^2 / (2 * 2pi * 50)
   = – 4pi^2 * 3600 / (200 pi)
   = – 226 rad / s^2.

   
   

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