Discuss the conservation of energy in an elastic spring. Hence write an expression for the maximum speed of a body of massin oscillating at its one end.

Write an expression for kinetic energy of rolling body.

Define the term work and derive its SI unit. Write an expression for the kinetic energy of a body of mass m moving with a uniform speed v.

Show that the elastic force of a spring is a conservative forcce. Hence write an ex,pression for the petenial energy of an elastic stretched spriing.

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

Spring mass system is shown in figure. Find the elastic potential energy stored in each spring when block is at its mean position. Also find the time period of vertical oscillations. The system is in vertical plane.

Spring mass system is shown in figure. Find the elastic potential energy stored in each spring when block is at its mean position. Also find the time period of vertical oscillations. The system is in vertical plane.

Draw a plot of spring force versus displacement x. Hence find an expression for the P.E. of an elastic stretched spring.

Explain what is meant by potential energy of a spring ? Obtaining an expression for it and discuss the nature of its variation.

Illustrate the law of conservation of energy by discussing the energy changes which occur when we draw a pendulum bob to one side and allow it to oscillate. Why does the bob eventually come to rest ? What happens to its energy eventually ? Is it a violation of the law of conservation of energy ?\

Illustrate the law of conservation of energy by discussing the energy changes which occur when we draw a pendulum bob to one side and allow it to oscillate. Why does the bob eventually come to rest ?