A centrifuge is a common laboratory instrument that separates components of diff

Question

A centrifuge is a common laboratory instrument that separates components of differing densities in solution. This is accomplished by spinning a sample around in a circle with a large angular speed. Suppose that after a centrifuge in a medical laboratory is turned off it continues to rotate with a constant angular deceleration for 11.1 s before coming to rest.

A. If its initial angular speed was 3961 rpm, what is the magnitude of its angular deceleration? Give answer in rev/s2.

B. How many revolutions did the centrifuge complete after being turned off?

Explanation / Answer

Angular speed = 3702 rpm=3702/60=61.7 rev/s
A)=>Anugler retardation=61.7/11.1=5.56 rev/s^2
B)No of revolution of centrfugal pump before coming to rest
=61.7 x 11.1 = 684.87

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