Force:
Force is an important factor in the field of Mechanics which may be broadly defined as an Agent which produces or tends to produce or destroy motion.
Characteristics of a Force:
1. Magnitude of the force.
2. The direction of the line, along which the force acts. It is also known as a line of action of the force.
3. Nature of the force. This is denoted by placing an arrowhead on the line of action of the force.
4. The point at which the force acts on the body.