The two spheres AA and BB each have a mass of $400$ gg$.$ The spheres are fixed to the horizontal rods as shown in $($Figure $1)$ and their initial velocity is $2$ m$/$sm$/$s$.$ The mass of the supporting frame is negligible and it is free to rotate. Neglect the size of the spheres.If a couple moment of MM $=0\mathrm{.}1$ N$$mN$$m is applied to the frame, determine the speed of the spheres in $3$ ss$.$

Express your answer to three significant figures and include the appropriate units.

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