How fast (in rpm) must a centrifuge rotate if a particle7.0cm from the axis of rotation is to experience an acceleration of 100000 m/s2?

w = 3.6087 10⁶ rpm

Explanation:

The centripetal acceleration is

         a = v²/r

where r is the distance from the center of rotation and v is the magnitude of the velocity

let's reduce to the SI system

        r = 7.0 cm (1m / 100cm) = 0.070 m

the angular and linear variables are related

         v = w r

we substitute

         a = w² r

         w =

         w =

         w = 3.779 10⁵ rad / s

let's reduce to rpm

          w = 3.779 10⁵ rad / s (1rev / 2pi rad) (60 s / 1min)

          w = 3.6087 10⁶ rpm

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