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Explain the different experiment.
Purpose of this Practical is to verify the law for parallelogram of forces, law for triangle of forces and law of polygon of forces.
Purpose of this experiment is to test that three non-parallel forces in equilibrium can be represented by a triangle of forces.
When two forces act on a body in one plane in two different directions, they are equivalent to a single force. This equivalent force is called Resultant of those two forces.
The purpose of this experiment was to test that when four or more forces are in equilibrium at a point, they can be represented by a polygon of forces, from which unknown can be found.