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The adjacent graph shows the extra exten...

The adjacent graph shows the extra extension `(Deltax)` of a wire of length `1m` suspended from the top of a roof at one end with an extera load `Deltaw` connected to the other end If the cross sectional area of the wire is `10^(-5)m^(2)` calculate the Young's modulus of the meterial of the wire
(A) `2 xx 10^(11) N//m^(2)` (B) `2 xx 10^(-11)N//m^(2)` (c) `3 xx 10^913) N//m^(3)` (D) `2 xx 10^(16)N//m^(2)`
.

Text Solution

Verified by Experts

`Deltal=((l_0)/(AY))Deltawslope=(l_(0))/(AY)=(1xx10^(-4))/(20)rArr(1)/((10^(-6))Y)=(1xx10^(-4))/(20)`
`Y = 20 xx 10^(10) = 2 xx 10^(11) N//m^(2)` .
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