Force is a push or pull on an object. Force is a vector quantity. It has both magnitude and direction. SI Unit of force is Newton Symbolized as N. 1N force is that force which can accelerate 1kg mass by 1m/s2
Forces are mainly of two types
- Contact force
- Forces resulting from action-at-a-distance
Contact forces are those forces which are produced by contact of two objects such as
- Frictional force
- Tension Force
- Normal Force
- Air Resistance Force
- Applied Force
- Spring Force
Forces resulting from action-at-a-distance are such forces that result even when the two interacting objects are not in physical contact with each other, yet are able to exert a push or pull despite their physical separation. Examples of action-at-a-distance forces include
- Gravitational force
- Electrical Force
- Magnetic Force
- Molecular interaction force
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