PhysicsNEET 2020Young's, bulk and shear moduli; Poisson's ratio

Mechanical Properties of Solids

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. $\frac{M g L _{1}}{A L}$
B. $\frac{M g ( L _{1} - L )}{A L}$
C. $\frac{M g L}{A L _{1}}$
D. $\frac{M g L}{A ( L _{1} - L )}$ ✓

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

Mechanical Properties of Solids

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