How Many Revolutions Does a Centrifuge Make in 240 Seconds?

AI Thread Summary
A centrifuge accelerates from rest to 15,000 rpm in 240 seconds, requiring the calculation of total revolutions during this time. The initial approach mistakenly assumes constant angular velocity, yielding 60,000 revolutions. To solve correctly, one must consider angular acceleration and apply relevant equations. It’s crucial to convert units to radians when necessary for accurate results. Understanding angular acceleration is key to determining the correct number of revolutions.
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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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