A centrifuge is a common laboratory instrument that separatescomponents of diffe

Question

A centrifuge is a common laboratory instrument that separatescomponents of differing densities in solution. This is accomplishedby spinning a sample around in a circle with a large angular speed.Suppose that after a centrifuge in a medical laboratory is turnedoff it continues to rotate with a constant angular deceleration for23.2 s before coming to rest. (a) If its initial angular speed was3490 rpm, what is the magnitude of itsangular deceleration?
1 rev/s2
(b) How many revolutions did the centrifuge complete after beingturned off?
2 rev (a) If its initial angular speed was3490 rpm, what is the magnitude of itsangular deceleration?
1 rev/s2
(b) How many revolutions did the centrifuge complete after beingturned off?
2 rev

Explanation / Answer

a. f=i+t 0=3490*2/60+*23.2 =-15.75rad/s2=2.50714rev/s b. f2-i2=2 0-(3490*2/60)2=2*-15.75* From this we get in radians By /2 we get num of revolutions. Hence we get by it. b. f2-i2=2 0-(3490*2/60)2=2*-15.75* From this we get in radians By /2 we get num of revolutions. Hence we get by it.

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