Question

. A wire of length L, area of cross section \(A\) is hanging from a fixed support. The length of the wire changes to \(L_{1}\) when mass \(M\) is suspended from its free end. The expression for Young's modulus is:
A \(\frac{M g L_{1}}{A L}\)
в \(\frac{M g\left(L_{1}-L\right)}{A L}\)
c \(\frac{M g L}{A L_{1}}\)
(D) \(\frac{M g L}{A\left(L_{1}-L\right)}\)

Answer 1

(D) \(\frac{M g L}{A\left(L_{1}-L\right)}\)

Answer 2

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