A stell wire of length 4 m ,is stretched through 2 mm ,.The corss - sectional area of the wire is `2.0 mm^2` .If young's modulus of steel si `2.0 xx 10 ^11 N//^2` find
The elastic potential energy stored in the wire.

A stell wire of length 4 m ,is stretched through 2 mm ,.The corss - sectional area of the wire is 2.0 mm^2 .If young's modulus of steel si 2.0 xx 10 ^11 N//^2 find the energy density of the wire

A 14.5 kg mass, fastened to the end of a steel wire of unstretched length 1.0 m, is whirled in a vertical circle with an angular velocity of 2 rev//s at the bottom of the circle. The cross-sectional area of the wire is 0.065 cm^2 . Calculate the elongation of the wire when the mass is at the lowest point of its path.

A copper wire 36m long with diameter 2 mm is melted to form a sphere. Find volume of the copper wire.

A copper wire 36m long with diameter 2 mm is melted to form a sphere. Find the radius of the sphere.

A rod of length l and negligible mass is suspended at its two ends by two wires of steel (wire A ) and aluminium (wire B) of equal length (shown in the figure) The cross-sectional areas of wires A and B are 1.0 mm^2 and 2.0 mm^2 , respectively. (Y_(AL) = 70 xx 10^9 N m^-2 and y _(steel) = 200 xx 10^9 N m^-2)

A rod of length 1.05 m having negligible mass is supported at its ends by two wires of steel (wire A) and aluminium (wire B) of equal length as shown in the figureThe cross sectional area of wires A and B are 1.0 mm^2 and 2.0 mm^2 , respectivley. AT wat point along the rod should a mass m be suspended in order to produce equal strains in both steel and aluminium wires?

A rod of length 1.05 m having negligible mass is supported at its ends by two wires of steel (wire A) and aluminium (wire B) of equal length as shown in the figure The cross sectional area of wires A and B are 1.0 mm^2 and 2.0 mm^2 , respectivley. AT wat point along the rod should a mass m be suspended in order to produce .equal stresses.

A steel rod of length 2l, cross sectional area A and mass M is set rotating in a horizontal plane about an axis passing through the centre. If Y is the Young's modulus for steel, find the extension in the length of the rod. (assume the rod is uniform).

A steel wire of length 4.7 m and cross-sectional area 3.0 xx 10^-5 m^2 stretches by the same amount as a copper wire of length 3.5 m and cross-sectional area of 4.0 xx 10^-5 M^2 under a given load. What is the ratio of the Young’s modulus of steel to that of copper?