Question

Define contact and non -contact forces. Give 3 examples of each.

Answer 1

Contact Force

Force applied by direct touching an object is called contact force. Like me pushing a wall i.e. muscular force or frictional force etc. All of them require contact for their application. You cannot push something without toching it. Friction will not act if two surfaces are not in contact.
●Muscular force
●Frictional force
●Reaction force
●Tension force

Non contact force

A non-contact force is a force applied to an object by another body that is not in direct contact with it.
●Gravitational force
●Electrostatic force
●Magnetic force