# Pure rolling-1!

A uniform disc of mass $$m$$ and radius $$R$$ is projected horizontally with velocity $$v_0$$ on a rough horizontal floor so that it starts off with a purely sliding motion at $$t = 0$$. After $$\large t_0 = \frac{v_0}{nμg}$$ second, it acquires a purely rolling motion. Find the value of $$n$$.

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