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Two small motors are kept on a smooth ta...

Two small motors are kept on a smooth table at a separation `L`. The motors have mass `M and 2M` and are connected by a light thread. The motors begin to wrap the thread and thereby move closer to each other. The tension in the thread is maintained constant at F. Find the time after which the two motors will collide. Neglect the dimensions of the motors and their stands.

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The correct Answer is:
`t = sqrt((4MN)/(3F))`
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ARIHANT-MOMENTUM AND CENTRE OF MASS-Momentum And Center of Mass
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