A laboratory technician is centrifuging a blood sample at an angular speed of 3000rpm.If the radius of the ci?

Question

A laboratory technician is centrifuging a blood sample at an angular speed of 3000rpm. If the radius of the circular path followed by the sample is 15cm. Find the speed of the sample is cm/s and in mi/h. Why do particles separate from the solution in a centrifuge?

Answer 1

The circumference is 2(pi)r = 94.25 cm

3000rpm = 50 rps

Since 1 revolution is 94.25 cm, 50 revs is 4712 cm.  Speed is therefore 4712 cm/s.

Multiply by 3600 and divide by 160934.4 to convert in to m/h.  105.4 m/h

Particles separate on the basis of their mass. Because F = ma