Work Energy And Power Class 11 Notes

Work work done w is defined as the dot product of force f and displacement s.

Work energy and power class 11 notes.

It is measured by the product of the force and the distance moved in the direction of the force i e w f s. Physics notes class 11 chapter 6 work energy and power work when a force acts on an object and the object actually moves in the direction of force then the work is said to be done by the force. Work whenever a force acting on a body produces a change in the position of the body work is said to be done by the force. Regarding the work energy theorem it is worth noting that i if w net is positive then k f k i positive i e k f k i or kinetic energy will increase and vice versa.

Here θ is the angle between and. Work done by the force is equal to the product of the force and the displacement of the object in the direction of force. Cbse class 11 physics work energy and power notes. Revision notes on work power and energy.

Work done by a force in displacing a body is equal to change in its kinetic energy. Where k i initial kinetic energy. Dronstudy provides free comprehensive chapterwise class 11 physics notes with proper images diagram. Work power and energy are among the most important concepts of mechanics.

Notes for work energy and power chapter of class 11 physics. Work done by the force is positive if the angle between force and displacement is acute 0 θ 90 as cos θ is positive. This signifies when the force and displacement are in same.