Units For Rpm…conversions?

So for homework. one of my equations has w^2…… i’m given rpm and it says the “w” in that equation is rad/s. So i figure i multiply rpm by 2*pi / 60. Regardless. The answer i’m suppose to get is meter / second.
Here is the equation
U(r) = 2 * a^2 * (delta ro ) * r * w^2 / (9 * viscosity).
a is dimater of molecule…..r is distance molecule is from center
This is for a centrifuge.
i was given the correct answer before hand, and converted all the units and then solved for w…..i get a conversion factor of 42 which isn’t making much sense….
thanks

One Comment zu “Units For Rpm…conversions?”

  1. Heavy Metal Bands

    RPM = w * (2*pi) * 60
    [ unit is in 1/min ]