Stress and Strain

A rod of length $1000 \mathrm{mm}$ and coefficient of linear expansion $\alpha ={10}^{-4}$ per degree is placed symmetrically between fixed walls separated by $1001 \mathrm{mm}$. Young's modulus of the rod is ${10}^{11}\mathrm{N} {\mathrm{m}}^{-2}$. If the temperature is increased by $20°\mathrm{C},$ then the stress developed in the rod is (in $\mathrm{N} {\mathrm{m}}^2$)

A copper wire and a steel wire of the same diameter and length are connected end to end and a force is applied. The force stretches their combined length by $1\mathrm{cm}.$The two wires will have

The volume stress of a body is the same as pressure.

Under what conditions a body experiences volume stress?

When the force being applied tangentially over the surface area of the plane which kind of stress is obtained-

When the compression stress has applied ,the length of the body is decreased.

A rubber band being stretched out is common example of _____ stress.

Unit of stress and strain is same

Dimension of a unit of Strain is $\left[{\mathrm{M}}^{\mathrm{x}}{\mathrm{L}}^{\mathrm{x}}{\mathrm{T}}^{\mathrm{x}}\right]$. The value of $x$ is  _____.

Why is strain Unitless?

SI unit of strain is

Stress and pressure have the same dimensions but pressure is not the same as stress.

What is the Dimension of Stress?

When a spiral spring is stretched by suspending a load on it, the strain produced is called____.

Substances which can be stretched to cause large strains are called _____.

Write the dimensional formula of Strain?

Dimension of Strain is $M^0{L}^x{T}^0$. The value of $x$ is _____.

The spherical ball contracts in volume by $0.1\%$. When subjected to a uniform normal pressure of $100$atmospheres. The bulk modulus of the material of ball is ${10}^k \mathrm{N}/{\mathrm{m}}^2$. The value of $k$ is _____.

Find the elongation of a steel rod of $100 \mathrm{mm}$ length when it is subjected to a tensile strain of $0.005$?

Substance which can be stretched to cause large strains are called__