Work Energy And Power Notes Pdf

Power the rate at which work is done is called power and is defined as p w t f s v f v.

Work energy and power notes pdf.

1 joule work is defined as the amount of work done to cover a distance of 1m in the direction of force when the force of 1n is applied on the body. Those students who have difficulty in understanding the chapter can utilize online notes for the same available on vedantu. Work energy and power. The s i unit of the work is joule.

The words work and power must be clearly defined as science concepts and it must be further clarified to the learners that these words do not. When a force moves. Revision of grade 9. Up to page 88 in the text book ch.

Energy can t be created or destroyed it can only be changed from one type into another type. Energy 1 energy is the ability of the body to do some work. Instantaneous power in terms of mechanical energy p de dt. States of matter and the kinetic molecular theory.

A moving car walking up stairs lifting heavy objects an aeroplane flying etc are among the most common examples that give us insight into the concept of work power and energy. Here s is the distance and v is the speed. Work work and energy are the same thing. When forces do work on an object they tend to accelerate the object.

The si unit of work is the unit of energy 1j joule. Work power and energy are among the most important concepts of mechanics. Work is defined as the product of the force and the distance covered by the body in the direction of force. Cbse class 11 physics work energy and power notes.

Transverse pulses on a string or spring. Work energy and power. The unit of power in s i system is j s watt and in c g s system is erg s. A guide to work energy and power teaching approach work energy and power is a topic which comprise of three concepts which are very closely related work and energy and power.

6 finish newton s laws and circular motion energy work definition examples of work work and kinetic energy conservative and non conservative forces work and potential energy conservation of energy. Work energy and power tuesday february 10th reading. Work energy and power in this section of the transport unit we will look at the energy changes that take place when a force acts upon an object. We call this rule conservation of energy.

2 3 work energy and power work and kinetic energy 2 3 work as energy transfer work as energy transfer work w is a quantity that gives the amount of energy transferred between a system and its surroundings by mechanical means.