To determine Young's modulus of elasticity of the material of a given wire.

APPARATUS SUPPLIED WITH THIS EXPERIMENT

1. SEARL'S APPARATUS WITH SPECIMEN WIRE
2. SCREW GAUGE
3. VERNIER CALIPPERS
4. SLOTTED WEIGHTS WITH HANGER (5*500 GMS)  
5. OPERATING MANUAL                                                                                              Searle’s apparatus determines the Young’s modulus of elasticity (Y) of a wire. It uses two parallel metal wires (one reference, one experimental) suspended from a rigid support. By adding masses to the experimental wire, it elongates. A micrometer screw and a spirit level measure minute changes in length precisely.