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September 22, 2014

Homework Help: physics

Posted by usha on Monday, August 15, 2011 at 1:02pm.

An empty plastic box of mass 9 kg is found to accelerate up at the rate of g/3 m/sec2 when placed deep inside water. Mass of the sand that should be put inside the box so that it may accelerate down at the rate of g/4 m/sec2 is

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