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**1. Homework Statement**

How fast (in rpm) must a centrifuge rotate if a particle 7.0 cm from the axis of rotation is to experience an acceleration of 100,000 g's?

My variables

radius= 7 cm or .07m

radial accel= 100,000 g's or 980,000m/s^2 or 98,000,000cm/s^2

V= I think I need this to get w

w= ? I think I need to solve this to get rpm

rpm= ? this is what I want

**2. Homework Equations**

radial accel = v^2/r

v= rw

**3. The Attempt at a Solution**

980000/.07 = 68,600

[tex]\sqrt{}68600[/tex]/.07= 261.9

261.9/.07 = 3,741 rpm

whether i set everything as meter or centimeter, I still get the same answer. I check the back of the book and it says 3.6x10^4 or 36,000rpm

**1. Homework Statement**

Any help would be appreciated.