Mechanical Prop...

The $$'\sigma '$$ of a material is 0.20. If a longitudinal strain of $$4.0\times { 10 }^{ -3 }$$ is caused, by what percentage will the volume change -

When a wire is stretched, an amount of work is done. What is the amount of work done in stretching a wire through $$0.1mm$$, if its length is $$2m$$ and area of cross - section, $$10^-6m^2 ( Y=2 \times10^11 N/m^2)$$

A square frame of ABCD consisting of five steel bars of cross section area $$400 \,mm^2$$ and joined by pivot is subjected to action of two forces $$P =40 \, kN$$ in the direction of the diagonal as shown.Find change in angle at $$A$$ if Young's modulus $$Y=2\times 10^5 \,N/min.$$

A wire is subjected to a tensile stress. If A represents area of cross-section, L represents original length, I represents extension and Y is Young's modulus of elasticity, then elastic potential energy of the stretched wire is

A bar is subjected to an axial forces as shown in figure. Find the total elongation in the bar. (E is the modulus of elasticity of the bar and A is its cross-section)

For maximum extension with given load for a wire with same value of Young's modulus of elasticity, which is true?

A wire of density $$ 9 \times 10^3 Kg/m^3 $$ is stretched between two clamps 1 m apart and is stretched to an extension of $$ 4.9 \times 10^{-4} $$ meter, Young's modulus of material is $$ 9 \times 10^{10} N/m^2 $$. Then 

The bulk modulus of a spherical object is B. If it is subjected to uniform pressure p, the fractional decrease in radius is

When a rubber ball is taken to bottom of lake, its volume reduces by 0.1% then depth of lake (Bulk modulus rubber is $$6\times { 10 }^{ 8 }N/{ m }^{ 2 }$$)

When a rubber cord is stretched, the change in volume with respect to change in its linear dimensions is negligible. The Poisson's ratio for rubber is