Conceptual physics 1b Contact and Non Contact Forces

Tension

when a string/rope is attatched to an object, and the string pulls on the object.

Buoyant

when an object is partially or fully submerged in a fluid (air of water)

Thrust

when exhaust gases escape an object, like a rocket.

Elastic/Spring

when a spring is coiled against an object.

Friction

When a solid object moves along a solid surface creating resisting force relative to the objects motion.

Drag

When an object interacts with a fluid (air or water) by moving through that fluid causing resisting force.

Normal

when a solid object is on top of a solid surface, causing perpendicular force.

Gravitational

a force between two objects with mass. The more mass an object has the more attracting force it has towards the other objects.

Electric

a force between two objects with charge. Opposite charges attract while objects with the same charge repel.

Magnetic

a force that ultimately arises between moving charges. Like the electric force, the magnetic force can be both attractive and repulsive.