A rod of length $l$ and area of cross-section $A$ is heated from $0°C$ to $100°C$. The rod is so placed that it is not allowed to increase in length, then the force developed is proportional to
A rubber cord $10\, m$ long is suspended vertically. How much does it stretch under its own weight $($Density of rubber is $1500\, kg/m^3, Y = 5×10^8 N/m^2, g = 10 m/s^2$$)$
The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?
A beam of metal supported at the two ends is loaded at the centre. The depression at the centre is proportional to
The modulus of elasticity is dimensionally equivalent to