Work and Potential Energy
When a force moves an object through a distance, ENERGY IS TRANSFERRED and WORK IS DONE.
- Whenever something moves, something else is providing some sort of effort to move it.
- The thing putting the effort in needs a supply of energy (like fuel, food, etc...)
- It then does work by moving the object - it transfers the energy it receives into other forms
- Whether this energy is transferred usefully or is wasted, you can still say that work is done.
WORK DONE = FORCE X DISTANCE
Whther the force is friction or weight or tension in a rope, it's always the same. To find how much energy has been transferred (in joules), you just multiply this force in Newtons by the istance moved…