Show that the length of a wire which can support its own weight is `l=sigma_b//Dg`, where `sigma_b` is the breaking stress of the material of the wire and D is the density of the material of the wire.

A tuning fork is in unison with 1.0 m length of sonometer wire. When the stretching weights are immersed in water, the length of the wire in unison with the same tuning fork is 0.934 m. Calculate the density of the material of the weights ?

A 1 m long metal wire of cross sectional area 10^(-6)m^(2) is fixed at one end from a rigid support and a weight W is hanging at its other end. The graph shows the observed extension of length Deltal of the wire as a function of W. young’s modulus of material of the wire in SI units is :

if rho is the density of the meterial of a wire and sigma is the breaking stress. The greatest length of the wire that can hang freely without breaking is

A wire is suspended vertically from a rigid support. When loaded with a steel weight in air, the wire extends by 16cm . When the weight is completely immersed in Water, the extension is reduced to 14 cm . The relative density of the material of the weight is

Show dimensionally that the expression , T = (MgL)/(pi r^(2)l is dimensionally correct , where T is Young 's modulus of the length of the wire ,Mg is the weight applied in the wire and L is the original length of the wire ,and l is the increase in the length of the wire .

The breaking stress for a wire of radius r of given material is F N//m^(2) . The breaking stress for the wire of same material of radius 2r is:

There is no change in the volume of a wire due to the change in its length on stretching. The Poisson's ratio of the material of the wire is

Two uniform wires of same material , each weighing 1 g but one having double the length of the other, are connected in series , carrying a current of 10 A . The length of the longer wire is 20 cm . Calculate the rate of consumption of energy in each of the two wires. which wire gets hotter ? The density of the material of the wire is 20 xx 10^(-5) Omega cm .

A wire of length l and cross-sectional are A is suspended at one of its ends from a ceiling. What will be its strain energy due to its own weight, if the density and Young's modulus of the material of the wire be d and Y?

The breaking stress for a substance is 10^(6)N//m^(2) . What length of the wire of this substance should be suspended verticaly so that the wire breaks under its own weight? (Given: density of material of the wire =4xx10^(3)kg//m^(3) and g=10 ms^(-12))