Mechanical Prop...

The graph shows the extension of a sample of a type of rubber as different loads F are applied and then gradually removed.
What is the best estimate of the strain energy in the rubber when a load of $$80$$ N is applied?

In an experiment, bras and steel wires of length lm each with areas of cross section $$1 mm^2$$ are used. the wires are connected in series and one end of the combined wire is connected to a rigid support and other end is subjected to elongation. The stress required to produce a net elongation of $$0.2 mm$$ is :
(Given, the Young's Modulus for steel and brass are respectively, $$120 \times 10^9 N/m^2$$ and $$60 \times 10^9 N/m^2$$)

The bulk modulus for an incompressible liquid is?

Young's modulus is defined for:

From the ceiling, a light rod of length $$200$$ cm is suspended horizontally with the help of two vetical wires of equal lenght as shown in figure. If one wire is made of brass and have cross-sectional area $$0.2$$ $$cm^2$$ and other of steel of $$0.1$$ $$cm^2$$ of cross-sectional area, then at what distance along rod a weight may be hung to produce equal stress in both the wires?

The dimensions of Poisson's ratio is?

The stress for one litre of a perfect gas, at a pressure of $$72$$ cm of Hg, when it is compressed isothermally to a volume of $$900$$ cc, is?

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

If for a material, Y and B are Young's modulus and Bulk modulus then: