mechanics
The change in length of a steel wire under an applied load can be halved by keeping all other conditions constant but using:
A. a different material having a Young's modulus half that of steel
B half the cross sectional area of the steel wire
C half the length of steel wire
D half the radius of the steel wire

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posted by Writeacher

A Piece of material 15 cm long by 2.5 cm square is in compression under a load 100 KN. If the modulus of elasticity of the material s 105 GPa and Poisson’s ratio is 0.25, find the alteration in length if all lateral strain is prevented by the application of uniform lateral external pressure of suitable intensity.
posted by mohd
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