Question

For the pelleting of the microsomal fraction from a liver homogenate, an ultracentrifuge is operated at a speed of 40000 rpm. What is the angular velocity, ω, in radians per second?

(a) 3888.8 rad s^-1

(b) 5680.8 rad s^-1

(c) 4188.8 rad s^-1

(d) 4288.8 rad s^-1

I got this question in exam.

My enquiry is from Centrifugation in division Unit Operations of Bioprocess Engineering

Answer 1

Correct answer is (c) 4188.8 rad s^-1

The best explanation: The angular velocity, ω, may be calculated using the equation:

ω = (2 π rev min-1)/60

ω = 2 × 3.1416 × 40000/60 rad s^-1

= 4188.8 rad s^-1.