Consider a bead of mass m that is free to move on a thin, circular wire of radius r. The bead is given an initial speed v(adsbygoogle = window.adsbygoogle || []).push({}); _{0}and there is a coefficient of kinetic friction u_{s}. The experiment is performed in a spacecraft drifting in space. Find the speed of the bead at any subsequent time t.

I did the following:

f_{k}= m*a= m * dv/dt

v(t)= v_{0}- m * dv/dt

But I bet that is not the answer..... Could somebody please help?

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# A bead in circular motion in space!

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