Related InterviewSolutions

• Two parallel and opposite forces, each of magnitude `4000 N`, are applied tangentially to the upper and lower faces of a cubical metal block `25 cm` on a side. Find the angle of shear and the displacement of the upper surface relative to the lower surface. The shear modulus for the metal is `80 GPa`.
• Find the density of the metal under a pressure of 20,000 N `cm^(-2)`. Given density of the metal=11 g `cm^(-3)`, bulk modulus of the metal `=8xx10^(9) Nm^(-2)`
• A lift is tied with thick iron wire and its mass is `1000kg`. If the maximum acceleration of the lift is `1.2ms^(2)` and the maximum stress of the wire is `1.4xx10^(8) Nm^(2)` what should be the minimum diameter of the wire?
• Calculate the volume change of a solid copper cube, 40 mm on each edge, when subjected to a pressure of `2xx10^(7)` Pa. The bulk modulus for copper is `1.25xx10^(11) Nm^(-2)`.
• A block of vloume 1 `m^(3)` is subjected to a hydrostatic pressure of `1.3xx10^(5) Nm^(-2)`. If the bulk modulus of the material of the block be `26xx10^(12) Nm^(2)`, what is the decrease in the volume of the block?
• Two wires made of the same material are subjected to forces in the ratio of `1:4`. Their lengths are in the ratio `8:1` and diameter in the ration 2:1. Find the ratio of their extensions.
• A steel wire 2mm in diameter is stretched between two clamps, when its temperature is `40^@C` Calculate the tension in the wire, when its temperature falls to `30^@C` Given, coefficient Y for steel ` = 21 xx 10^(11) dyn e//cm^2`, coefficient for steel= 11 x 10^(-6).
• The breaking stress of aluminium is `7.5 xx 10^7 Nm^(-2)` Find the greatest length of aluminum wire that can hang vertically without breaking Density of aluminium is `2.7 xx 10^3 kg m^(-3)`
• The compressibility of water is `4xx10^-5` per unit atmospheric pressure. The decrease in volume of 100 cubic centimetre of water under a pressure of 100 atmosphere will be
• A box shaped piece of gelatine desert has a top area of 15 `cm^(2)` and a height of 3 cm. when a shearing force of 0.50 N is applied to the upper surface, the upper surface is displaced 4mm relative to the bottom surface. What are the shearing stress, shearing strain and shear modulus for the gelatin ?