Principle and Working:
Based on Hook’s law that with in elastic limit stress is directly proportional to strain. i.e. stress/strain = a constant. This constant is called an modulus of elasticity. When the beam is depressed, it become curved. There is elongation of fibres of beam on convex side and contraction on concave side. Thus young modulus comes into picture due to longitudinal stress & strain.
A cantilever is a beam(rod) of uniform cross section whose length is large as compared to its cross section. With the help of hanger suspended at the middle of beam, supported on knife edges suitable loads are applied. A bulb and cell are connected in series between the central leg of spherometer and one end of beam. The depression of beam in the middle is measured with the help of spherometer.

Formula used :- Young`s modulus =Mgl³/4δbd³
Where,

M = mass suspended at the middle point of beam, L= length of beam (distance between the knife edges).

b = Breadth of beam.

d = thickness of beam.

δ= depression at the middle point of the beam, determined using spherometer.

Contents:

S. No.	Item Name	Qty.
1.	Steel strip L=1m, B= 2.5cm, T= 5mm.	1
2.	Knife edges acting as G-Clamp (MS)	2
3.	Stirrup with hook	1
4.	Hanger 500g+9x500g slotted weight of MS	1
5.	Vernier Calliper	1
6.	Screw Gauge	1
7.	Bulb holder on plastic base with bulb	1
8.	Cell holder with cell 1.5 V	1
9.	Red lead of 50cm	2
10.	Black lead of 50cm	1
11.	Connecting leads Banana with U clips	1
12.	Instruction manual	1

• 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
• Young Modulus Double Beam Cantilever