- #1
hiddenlife5009
- 15
- 0
Homework Statement
A sample of blood is placed in a centrifuge of radius 15.7 cm. The mass of a red corpuscle is 3.09×10-16 kg, and the magnitude of the force required to make it settle out of the plasma is 4.01×10-11 N. At how many revolutions per second should the centrifuge be operated?
Homework Equations
Fc = mv2/r
The Attempt at a Solution
Well I am not sure if the above equation actually helps with this question, but the equation can be rearranged to suit the values:
v = (Fc x r/m)^.5
From using this equation I can obtain the velocity which is 1427.39 m/s. My question is whether I am looking at this question with the completely wrong formula or am I on the right track? If I am on the right track, what would I go about doing next? I can't recall any ways of determining revolutions per second from velocity...
Any help would be most appreciated.