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When a body of mass .m., density d(B) is...

When a body of mass .m., density `d_(B)` is suspended from a wire, its elongation is .e. when the body is in air. If the body is completely immersed in a non-viscous liquid of density `d_(l)` when its elongation is

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`F = W_a = mg , F^1 = W_l = mg (1 - (d_l)/(d_B))` as `e = (Fl)/(AY)`
`e prop F` (as l , A , Y are same in both case )
`(e^1)/( e) = (F^1)/( F) = (mg (1 - (d_l)/(d_B)))/(mg) rArr e^1 = e (1-(d_l)/(d_B))`
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AAKASH SERIES-MECHANICAL PROPERTIES OF SOLIDS-EXERCISE - 3
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  2. A wire of length 1m and radius 1mm is subjected to a load. The extensi...

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  3. An aluminium wire and a steel wire of the same length and cross-sectio...

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  5. When a mass is suspended from the end of a wire the top end of which i...

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  6. A metal cube of side length 8.0cm has its upper surface displaced with...

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  9. A 2 m long rod of radius 1 cm which is fixed from one end is given a t...

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  10. A steel wire of mass 3.16Kg is stretched to a tensile strain of 1xx10^...

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  19. One end of a horizontal thick copper wire of length 2L and radius 2R i...

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  20. Force constants of two wires A and B of the same material are k and 2k...

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