Work, Energy and Power

In this topic, we will learn what is work and when work is said to be done. It also describes the factors on which work depends. It explains with examples when no work and actual work is said to be done.

In this topic, we will learn about the time rate at which work is done or energy is transferred i.e. power. It also explains its SI unit, and derivation of formula along with instantaneous power.

This topic covers the definition and concept of mechanical energy and its different forms. It also explains how energy possessed by the rest of the motion of a body is called mechanical energy with examples.

This topic deals with the calculation of the potential energy of a body arising through the conservative force of gravity. Mathematical expression for gravitational potential energy for varying distance from the earth’s centre is also derived here.

In this topic, we will learn some significant concepts of conversion of one form of energy into the other form. The topic also deals with the law of conversion of energy giving some examples.

In this topic, we will learn about the different sources of energy. It discusses the renewable and non-renewable sources of energy. It mentions sunlight, wind, coal, crude oil and natural gas as the source of energy.

This topic explains the universal law of conservation of energy. We will also learn about examples of transformation of energy from one body to another along with the degradation of energy during transformation.