Physics Practicals Class 11

# Variation in Volume with Pressure

• Teach science experiments in a gamified way
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• Engaging simulations with easy-to-teach instructions

• In the simulation, you will gain a comprehensive understanding of the elasticity of materials, including Young's modulus and Hooke's law of elasticity.
• You can explore how Young's modulus influences the elasticity of different materials.
• At the end of the simulation, you will understand how Young's modulus impacts the elasticity of materials.
• You will have the opportunity to investigate the application of Searle's apparatus in the experiment.
• Through the simulation, you can grasp how Young's modulus is utilized in various aspects of daily life and industry.

### Simulation Details

Duration – 30 Minutes
Easily Accessible
Languages – Odia & English
Platforms – Android & Windows

Description

The Searle’s apparatus is based on principle of the Hooke’s law. Hooke’s law is also referred to as a low elasticity which is expressed in terms of stress and strain.

Stress – External force applied per unit area of the material.

Hooke’s Law
Hooke’s law states that applied stress is directly proportional to strain produced on material such that the extension produced in a wire is directly proportional to the load attached to it.

If the l is the extension in wire of the length L and radius r due to loading weight Mg, then the stress (σ) on the wire is given by,

The strain (ε) produced in wire is given by,

Hence, Young’s modulus of the wire is given by,

### Requirements for this Science Experiment

• Searle’s apparatus
• Weight hanger
• Constant weight slot
• Slotted weight
• Two wires of the same diameter
• Screw gauge
• Meter scale
• Wire

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