A force is a push or pull acting upon an object as a result of its interaction with another object. There are a variety of types of forces. A variety of force types were placed into two broad category headings on the basis of whether the force resulting from the contact or non-contact of the two interacting objects.
Contact Forces Non - Contact Forces
Frictional Force Gravitational Force
Tensional Force Electrical Force
Normal Force Magnetic Force
Air Resistance
Applied Force
Spring Force