Can we do centrifugation without any machinery? Can we like, spin ourselves with the mixture? Because it would be really expensive just to buy the machine to do a centrifugation experiment or is there a way to invent a machine that can do centrifugation?
Answer When there is no difference in densities of solvent and solute, solute particles do not separate by sedimentation by the action of gravitational force' g '. In centrifuge, gravitational force is replaced by centrifugal force generated by the centrifuge. Centrifugal force is a product of F= M r ω2 M: mass of particle, r: radius of rotation (cm) ω:Average angular velocity ( RPM) A low speed bench top centrifuge runs at spin speed of 3000 rpm Obviously to generate this spinning we need a machine to do the job. Centrifuges sold in the market are designed to satisfy the principle of centrifuging Pls ref to this link for further clarity www.phys.sinica edu.tw/TIGP-NANO/Course/2007_Spring/Cla...
