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A gun which fires small balls of mass 20...

A gun which fires small balls of mass `20 g` is firing `20 balls` per second on the smooth horizontal table surface `ABCD`. If the collision is perfectly elastic and balls are striking at the centre of table with a speed of `5 m//s` at an angle of `60^(@)` with the vertical just before collision, then force exerted by one of the legs on ground is (assume total weight of the table is `0.2 kg`)

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