Work Energy and Power
Work, Energy & Power •
Work: The product of force acting on a body and displacement of a body in the direction of force is called work. It is a scalar quantity. Its SI unit is Joule and CGS unit is erg. Work(W) = Force x displacement in the direction of force W = F x d Factors affecting the Work: i) Magnitude of force ii) Direction of force iii) Displacement of the object due to force
Energy Ability to do work is called energy.
It is a scalar quantity. SI unit of energy is Joule. Types of Energy: i) Mechanical Energy ii) Electrical Energy iii) Heat Energy iv) Light Energy V) Sound Energy VI) Magnetic Energy VII) Atomic Energy VIII) Chemical Energy Mechanical Energy: Energy possessed by a body by virtue of its position or its motion is called mechanical energy. It is of two types: Kinetic energy and Potential energy.