A uniform, $0\mathrm{.}0350kg$ rod of length $0\mathrm{.}350m$ rotates in a horizontal plane about a fixed axis through its center and perpendicular to the rod. Two small rings, each with mass $0\mathrm{.}0200kg,$ are mounted so that they can slide without friction along the rod. They are initially held by catches at positions $0\mathrm{.}0550m$ on each side of the center of the rod, and the system is rotating at $48\mathrm{.}0re\frac{v}{m}in.$ With no other changes in the system, the catches are released, and the rings slide outward along the rod and fly off at the ends.

Part A

What is the angular speed of the system at the instant when the rings reach the ends of the rod?

Express your answer in revolutions per minute.

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Part B

What is the angular speed of the rod after the rings leave it$?$

Express your answer in revolutions per minute.

${}_{\text{r}\text{o}\text{d}}=$

$re\frac{v}{m}in$

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