Nature of Physical World and Measurement
Laws of Motion
Work, Energy and Power
Motion of System of Particles and Rigid Bodies
Properties of Matter
Heat and Thermodynamics
Kinetic Theory of Gases
- Elastic behaviour of materials
- Stress and strain
- Hooke’s law and its experimental verification
- Moduli of elasticity
- Poisson’s ratio
- Elastic energy
- Applications of elasticity
Consider two wires X and Y. The radius of wire X is 3 times the radius of Y. If they are stretched by the same load then the stress on Y is ___________.
The load-elongation graph of three wires of the same material as shown in the figure. Which of the following wire is the thickest?
For a given material, the rigidity modulus is `(1/3)^"rd"` of Young’s modulus. Its Poisson’s ratio is
Two wires are made of the same material and have the same volume. The area of cross-sections of the first and the second wires are A and 2A respectively. If the length of the first wire is increased by ∆l on applying a force F, how much force is needed to stretch the second wire by the same amount?