" A wire fixed at the upper end stretches by length I by applying a force F.The work done in stretching "

A wire fixed at the upper end stretches by length l by applying a force F. The work done in stretching is

A wire fixed at the upper end stretches by length l by applying a force F. The work done in stretching is

A wire fixed at the upper end stretches by length l by applying a force F. The work done in stretching is

A wire fixed at the upper end stretches by length l by applying a force F. The work done in stretching is

A wire fixed at the upper & stretches by length l by applying a force F. What is the work done by stretching the wire ?

A wire is stretched by one mm by a force of 1 kN. The work done is stretching the wire is

A spring of force constant k is stretched by a small length x . Find the work done in stretching it further by a small length y .

Two wire of same material and same diameter have lengths in the ratio 2 : 5. They are stretched by same force. The ratio of work done in stretching them is