Answer to Question #145697 in Physics for liam donohue

Question

Distinguish between work, energy and power, giving in each case an example
from agriculture that illustrates the meaning of each term

Answer 1

Energy can be defined as the capacity for doing work. The simplest case of mechanical work is when an object is standing still and we force it to move. 

Work is the application of a force over a distance. Lifting a weight from the ground and putting it on a shelf is a good example of work. The force is equal to the weight of the object, and the distance is equal to the height of the shelf.

Power is the work done in a unit of time. In other words, power is a measure of how quickly work can be done.