Elasticity and Hooke's Law

The dimensional formula of Young's modulus is: 

What do you mean by plastic deformation?

What will be the force constant of the spring system shown in the figure

A mass is suspended at the bottom of two springs in series having stiffness $10 \raisebox{1ex}{$N$}\!\left/ \!\raisebox{-1ex}{$mm$}\right.$ and $5 \raisebox{1ex}{$N$}\!\left/ \!\raisebox{-1ex}{$mm$}\right.$. The equivalent spring stiffness of the two Springs is nearly

For the spring system given in the figure, the equivalent stiffness is

A helical coil spring of stiffness $k$ is cut to two equal halves and then these are connected in parallel to support a vibrating mass m. The angular frequency of vibration, ${\omega }_n$ is 

What is the proportional limit in the stress-strain graph?

What is the dimensional formula for strain?

Write down the unit of strain.

What are strain and its properties?

What are the dimensions of stress?

What are types of stress?

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 quality of the material which opposes the change in shape, volume, or length is called

The backlash error can be eliminated in Searle's experiment, by rotating screw in

The elastic limit for a gas,

A light spring of force constant $8 {\mathrm{Nm}}^{-1}$ is cut into two equal halves and the two are connected in parallel; the equivalent force constant of the system is

The modulus of elasticity is dimensionally equivalent to 

Stress is given by 

Within elastic limit, prove that Young's modulus of material of wire is the stress required to double the length of wire.