A disk of mass $m$ on a frictionless table is attached to a hanging cylinder of mass $M$ by a cord through a hole in the table (see Fig. 5-42). Find the speed with which the disk must move in a circle of radius $r$ for the cylinder to stay at rest.
Added by Bradley M.
Step 1
The tension in the cord provides the centripetal force for the disk to move in a circle of radius $r$. So, $T = m\frac{v^2}{r}$, where $v$ is the speed of the disk. Show more…
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