 |
| Summary |
|
 The essential conditions to be satisfied for work to be done are: |
| |
| Some force must act on the object |
| |
| The point of application of force must move in the direction of force |
| |
| W = F x S |
| |
 SI unit of work is joule |
| |
 Energy is the capacity to do work |
| |
 The two types of mechanical energy are kinetic energy and potential energy |
| |
 Kinetic energy is the energy possessed by an object by virtue of its motion |
| |
 Potential energy is the energy possessed by an object by virtue of its position or condition |
| |
Kinetic energy  |
| |
| Potential energy = mgh |
| |
 Law of conservation of energy states that energy can neither be created nor destroyed but can be transformed from one form to another |
| |
 Power is the rate of doing work |
| |
 |
| |
 SI unit of power is watt |
| |
