How Many Revolutions Does a Centrifuge Make in 240 Seconds?

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SUMMARY

The discussion focuses on calculating the total number of revolutions made by a centrifuge that accelerates from rest to 15,000 RPM in 240 seconds. The initial calculation of 60,000 revolutions assumes constant angular velocity, which is incorrect due to the presence of angular acceleration. To solve the problem accurately, one must apply the definition of angular acceleration and convert units into radians as necessary.

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  • Understanding of angular velocity and its units (RPM)
  • Knowledge of angular acceleration and its calculation
  • Familiarity with kinematic equations for rotational motion
  • Ability to convert between RPM and radians per second
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[SOLVED] Centrifuge Revolutions?

Homework Statement



A centrifuge accelerate from rest to 15,000 rpm in 240s. Through how many revolutions did it turn in this time?

Homework Equations



am i approaching this problem correctly?

The Attempt at a Solution



15000rev/m (1m/60s) (240s) = 60000 rev
 
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It is accelerating though. What you have calculated is for a constant angular velocity. What is the definition of angular acceleration? If you know that equation you can solve this problem. Don't forget to convert into radians where necessary.
 

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