Question

A uniform meter scale is suspended from 40 cm mark when weight of 25 gf and 10 gf are suspended at 5 cm mark and 75cm mark respectively. Calculate the weight of the meter scale.
W*50 + 25*5 + 10*75 = (W+25+10)40

10 W = 525
W = 52.5 gf

whatever a gf is :)
52.5gf

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