A wire of steel of radius r and length l breaks due to weight W .What will be the breaking weight of another steel wire of radius 2r and length 2l ?

In a bcc crystal what is the relationship between atomic radius (r) and edge length (a) ?

A mass of 4kg is hung from a metal wire of radius 0.5 mm and length 3m. Find the extension produced in the wire. What should be minimum radius of the wire so that the elastic limit of 20 xx 10^7 N/m^2 of the metal wire is not exceeded ? Y=20x10^10N/m^2.

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 2 r is

A steel wire of length 1 m and diameter 0.2mm is elongated by 1mm due to a weight of 3.14kg. The Young's modulus of steel wire is