YOUNG’S MODULUS
AIM: To determin3 the Young’s modulus wire.
APPARATUS: Two long wires A and B, vernier scales, masses, meter rule, micrometer
screw gauge.
THEORY
When a wire is stretched by a mass hanging from it, the wire is said to experience a tensile
strain, which is defined as the elongation per unit length. The force acting on a wire is a
measure of the tensile stress, which is defined as the force per unit area over which it is
proportional to the strain. The ratio of the stress to the strain is a constant called Modulus of
elasticity. For a stretched wire, this is called Young’s modulus Y. Thus
