Question

Answer the following in detail.

Differentiate between contract and non-contract force. Support your answer with suitable examples.

Answer 1

	Contract force		Non-contact force
i)	These are forces that need a physical touch on the object to act upon it.	i)	These are forces that do not need physical contact to act on an object.
ii)	These may or may not be natural forces.	ii)	These are natural forces.
iii)	They cannot work from a distance.	iii)	They can work from a distance as well.
iv)	Its various types are applied to force, normal force, tension, frictional force.	iv)	Its various types are magnetic force, electrostatic force, gravitational force.
v)	Example: Player kicking a ball, game of tug-of-war, rolling ball stops, itself, horse pulling a cart, etc.	v)	Example: Magnet attracting iron nails, mango falling from a tree, charged plastic ruler attracts bits of dry-paper, etc.