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Definition of Resultant Force. What is Resultant Force? All about Resultant Force. Explain complete details about Resultant Force. Importance and role of Resultant Force.

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What is Resultant Force?

If a number of forces P,Q,R etc. are acting simultaneously on a particle, then a single force, which will produce the same effect as that of all the given forces, is known as a resultant force. The forces P,Q,R etc. are called component forces. The process of finding out the resultant force of the given component forces, is known as composition of forces.

A resultant force may be found out analytically, graphically or by the following three laws:

1. Parallelogram law of forces. It states, “If two forces acting simultaneously on a particle be represented in magnitude and direction by the two adjacent sides of a parallelogram taken in order, their resultant may be represented in magnitude and direction by the diagonal of the parallelogram passing through the point.”

2. Triangle law of forces. It states, “If two forces acting simultaneously on a particle be represented in magnitude and direction by the two sides of a triangle taken in order, their resultant may be represented in magnitude and direction by the third side of the triangle taken in opposite order.”

3. Polygon law of forces. It states, “If a number of forces acting simultaneously on a particle be represented in magnitude and direction by the sides of a polygon taken in order, their resultant may be represented in magnitude and direction by the closing side of the polygon taken in opposite order.”

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