Work, Power and Energy - Part 3 | Class 9 Physics | Class 9 Preparation | LIVE |
Master the concepts of Work, Power, and Energy with Part 3 of our Class 9 Physics series! This video covers key principles and problem-solving tips to help you ace your exam preparation. Perfect for quick revision and understanding complex concepts effortlessly!
Work is achieved when an object is pushed or pulled, causing it to move in the direction of the force applied. To determine the amount of work done, multiply the magnitude of the force (the strength of the push or pull) by the distance the object moves in that direction (the displacement). It’s written as W = F.s. The force is measured in Newtons.
The ability of a body to perform work is referred to as its energy.
Unit of energy = Joules 1KJ = 1000 J
There are several distinct forms of energy, including potential energy, kinetic energy, heat energy, chemical energy, electrical energy, and light energy.
Kinetic energy is the energy that an object possesses due to its motion. The kinetic energy of an object is directly proportional to its velocity, meaning that as the object’s speed increases, so does its kinetic energy. This kinetic energy can be quantified by considering the work done to impart the object with its specific velocity.
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