Contact forces Non-contact forces These are forces which need a physical touch on the object to act upon it. These are forces which do not need a physical contact to act on an object. These may or may not be natural forces. These are natural forces They can not work from a distance. They can work from a distance as well. Its various types are applied force, normal force, tension frictional force its various types are magnetic force electrostatic force,gravitational force Examples player kiicking a ball game of tug of war rolling ball stops itself horse pulling a cart etc, Examples: magnet attracting iron nails, mango falling from tree, charged plastic ruler attracts bits of dry - paper etc.