Work Power and Energy (Physics)
WEeb.in Team Science Total Views: 497 Posted: Feb 6, 2020 Updated: Oct 7, 2026
Work Power and Energy
FUNDAMENTAL LAW OF CONSERVATION OF ENERGY – ENERGY CAN NEITHER BE CREATED NOR DESTROYED, CAN ONLY BE TRANSFORMED FROM ONE FORM TO ANOTHER
- Work is done when a force that is applied to an object moves that object. Technically, Work done on an object is defined as the magnitude of the force multiplied by the distance moved by the object in the direction of the applied force.
- Unit of Work is Joule – J
- Power is defined as the rate of doing work. SI unit of Power is Watt
- Energy is the capacity of a physical system to do work. There are two types of Energy.
| Potential Energy | Kinetic Energy |
| The energy possessed by a body due to its change in position or shape is called the potential energy | The energy which a body possesses by virtue of being in motion |
- Pressure is defined as the force acting per unit area
- The mass per unit volume of a substance is called Density
- The relative density of a substance is the ratio of the density of the substance to the density of the water
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