Exp-1 To investigate the elastic and plastic extension of metal wires.

- Easy setup.
- Modular approach.

- Young's modulus.
- Strain.
- Stress.
- Elastic Limit.
- Hooke's law.

**Principle and Working:**

The ratio of the normal stress to the longitudinal strain is called Young's modulus of elasticity. If a wire of length 's' and area of cross section 'a' be stretched by a force F and if a change (Increase) of length Δs is produced, then

Normal stress =F/a, Longitudinal strain, ε= Δs /s

Modulus of elasticity, E= Normal stress/ longitudinal strain.

In the present setup the extension produced is magnified by 40 times for easy observation on a pointer scale.

**Contents:**

Cat. No. |
Item Name |
Qty. |

C9807 | Rod 1m | 1 |

C9812 | Rod, 50cm | 3 |

C9808 | Rod, 25 cm | 2 |

C2942 | A’ shaped base, small | 2 |

SW092 | Bosshead | 5 |

C9809 | Clamp block | 3 |

SP640 | Cu wire, 34 SWG | 1 |

SG436 | Constantan wire, 34 SWG | 1 |

C9810 | Pulley with 4mm plug | 1 |

C9816 | Pointer | 1 |

C8228 | Scale | 1 |

C0510 | Support clip | 1 |

SW088 | Double hooked mass 50g | 24 |

- Free Fall Apparatus
- Variable 'g' Pendulum
- Centripetal Force & Moment of Inertia
- Projectile Motion Experiment
- Timing Car
- Timing Ball
- Linear Air Track with Digital Timer
- Linear Air Track with Data Logging
- Law of motion Kit
- Coupled Pendulum Oscillations
- Surface Tension
- Viscosity of Glycerine
- Forced Oscillators & Resonance
- Computerized Cavendish Balance (Imported)
- Gravitational Balance (Imported)
- Elastic & Plastic Deformation