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Two beads each of mass m are fixed on a ...

Two beads each of mass m are fixed on a light rigid rod of length 2l which is free to rotate in a horizontal plane. The bead on the far end is given some velocity `upsilon` as shown in the figure. If `K_(cm)` represents the kinetic energy of the centre of mass of the system and `K_(R)` represents the rotational kinetic energy of the system, then what is the value of `(K_(cm))/(K_(R))`?

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