Derive an expression for the potential energy of a stretched spring .

Derive an expression for the potential energy of an elastic stretched spring.

Derive an expression for the potential energy of an electric dipole of dipole moment vecp in an electric field vecE .

Derive an expression for the elastic potential energy stored in a stretched wire under stress.

Define potential energy. Derive an expression for the potential energy of a body of mass m, at a height h above the surface of the Earth.

Explain the conept of electric potential energy. Derive an expression for potential energy of a system of two point charges. Generalise the expression fo N discrete charges.

Derive an expression for potential energy of an electric dipole in a uniform electric field. In which situation, the potential energy fo dipole is (i) maximum and (ii) minimum.

Derive an expression for the potential energy of mass m, when placed at a height h form the Earth's surface .

Derive an expression for potential energy of a bar magnet when placed in an external magnetic field.