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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

A centrifuge in a medical laboratory rotates at an angular velocity of 3600 rev/min. When switched off, it rotates through 50.0 revolutions before coming to rest. Find the constant angular acceleration (in rad/s2) of the centrifuge.

To determine
The constant angular acceleration of the centrifuge.

Explanation

Given Info: The initial angular velocity is 3660rev/min , the final angular velocity of the centrifuge is 0rev/min , and the revolution of the centrifuge before it comes to rest is 50.0rev .

Explanation:

The formula for the constant angular acceleration of the centrifuge is,

α=ωf2ωi22Δθ

  • ωi  is the initial angular velocity of the centrifuge.
  • ωf is final angular velocity of the centrifuge.
  • Δθ is the revolution of the centrifuge before it comes rest.

Substitute 3660rev/min for ωi , 0rev/min for ωf , and 50.0rev for Δθ to find α

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