| A | B |
|---|
| effort | the total work done to achieve a particular end accomplished by a push |
| friction | the rubbing or scraping together of two objexcts - resistance to motion |
| fulcrum | the pivot point of the point that supports a lever |
| gear | a wheel with teeth |
| inclined plane | a ramp or a plane surface with one end higher than the other. |
| lever | it is a simple machine that is used to push |
| 1st class lever | the fulcrum is in the middle |
| 2nd class lever | the resistance is in the middle |
| 3rd class lever | the effort is in the middle |
| Machine | anything that does work |
| mechanical advantage | the mechanical advantahe of a machine is a number that tells you how much effort it saves |
| pulley | is aq wheel with a grooved rim |
| resistance | the force that is holding back |
| screw | it is a twisting inclined plane wrapped around a cylinder |
| wedge | made up of two inclined planes back to back |
| wheel and axle | involvdes a wheel turning an axle or the opposite helps to increase force |
| work | when a force moves an object oer a distance |
| gain of force | is the expense of distance |
