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[" A wire elongates by "ell" mm when a l...

[" A wire elongates by "ell" mm when a load W is hanged "],[" from it.If the wire goes over a pulley and two "],[" weights Weach are hung at the two ends,the "],[" elongation of the wire will be (in "mm" )- "],[[" (1) "ell," (2) "2ell," (3) zero "," (4) "ell/2]]

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A wire elongates by l mm when a load W is hanged from it. If the wire goes over a pulley and two weights W each are hung at the two ends, the elongation of the wire will be (in mm)

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