1. Muscular force, which is the force generated by a muscle man or animal muscle.
For example, a child picked up a bucket of water.
2. Force Tracks, the force generated by the objects recovered are experiencing pemampayan or stretching.
For example: In a suppressed or withdrawn.
3. Frictional forces, ie forces arising due to friction between the surfaces of two objects or more.
For example: the friction between car tires with asphalt road surface.
4. Force of machine, which is the force generated by the fuel inside the engine.
For example: the engine that drives the motorcycle engine.
5. Electric force, ie the force generated by electric charges or electric currents.
For example: a ruler mica-rub rubbed with hair.
6. The force of gravity, the force generated by the objects mass to attract the mass of the other toward the center of the object in question.