A load W produces an extension of `1mm` in a thread of radius `r`. Now if the load is made `4W` and radius is made `2r` all other things remaining same, the extension will become.

A load of 3kg produces an extension of 1.5 mm in a wire of length 3m and diameter 2mm . Young's modulus of the material of the wire is

A load of 2 kg produces an extension of 1 mm in a wire 3 m in length and 1 mm in diameter.l Calculate Young's modulus of elesticity of wire.

A load of 20 kg produces an extension of 1 mm in a wire 3 m in length and 1 mm in diameter.l Calculate Young's modulus of elesticity of wire.

A load attached to the end of a spring and in equilibrium produces 9 cm extension of spring. If the spring is cut into three equal parts and one end of reach is fixed at 'O' and other ends are attached to the same load, the tension in cm of the combination in equilibrium now is :

By melting a sphere of radius r cm, if a right circular cylinder of same base radius made, then the height of the cylinder is r cm.

A circular rope of weight W and radius r=R/2 is resting on a smooth sphere of radius R The tension in rope is

The length of a wire is increased by 1 mm due to applied load. The wire of the same material have lengths and radius half that of the first wire, by the application of the same force, then extension produced will be

When a uniform wire of radius r, is stretched by a 2 kg weight, the increase in its length is 2.00 mm. If the radius of the wire is R/2 and other conditions remaining the same, the increase in its length is