Ex. 26 A brass wire of length 5 m and cross- section 1 mm? is hung from a rigid support with brass weight of volume 1000 c.c. hanging from the other end. find the decrease in length of the wire when brass weight is completely immersed in water. Y of brass = 101N / m2 g = 9.8 m/s?, pw = 1 gm / c.c. %3D %3D
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