Question

5. Centrifuges create large forces by spinning rapidly to separate components of a liquid which have different densities. Ensuring that the samples in the centrifuge are balanced is important. The samples in a certain centrifuge are 9.5 cm from the axis of the rotor and it spins at 65,000 rpm.

A. What is the acceleration at the location of the samples?

B. What is the centripetal force on a 1.61 g sample?

C. What is the centripetal force on a 1.62 g sample?

D. What is the net force on the rotor if the samples from B and C are opposite each other in the centrifuge?

Answer 1