Why is it necessary to do work to increase the length of a wire by stretching it? Which form is this work converted into?

What is needed to do daily work?

Find an expression for the potential energy in a stretched wire. (Similar question : Find out an expression for the work done by a force in stretching a length of a wire with respect to strain produced in the wire.

Why do soaps not work in hard water?

A spring is stretched. Is the work down by the stretching force positive or negative ?

A metallic wire is stretched to increase its length by 20% .What will be the percentage change of its resistance?

An elastic spring of length L and of force constant k is stretched to increase its length by an amount x. The spring is further stretched to elongate it by y. The amount of work done in stretching the spring in the second case ( x and y are very small) is

How is the work done related to the heat produced when work is completely converted into heat?