Polygonal addition of forces is invalid->

In summary, polygonal addition of forces is a method used to find the resultant force of multiple forces acting on an object by drawing a polygon with each side representing a force vector. However, it is invalid because it assumes forces can be added like regular numbers, which is not always the case. The correct method is to use vector addition, breaking down each force into components and adding them using vector addition rules. While polygonal addition can be used in some cases, it would not work for forces acting in different planes, with different directions, or when the forces are non-coplanar.
  • #1
dedaNoe
52
0
The traditional polygonal addition of force is invalid because it doesn't take the dependence of the forces on the positions where they act. We cannot simply drag the force-vectors across the space and expect them to remain the same. The forces must change respectively to the change of the positions where they acted previously. That's so because of the law of lever. The traditional physics is just totally wrong from its very root.

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Well its for sale anyway.

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  • #2
Look into torque.
 

1. What is polygonal addition of forces?

Polygonal addition of forces is a method used to find the resultant force of multiple forces acting on an object. It involves drawing a polygon with each side representing a force vector, and the resultant force is represented by the closing side of the polygon.

2. Why is polygonal addition of forces invalid?

Polygonal addition of forces is invalid because it assumes that forces can be added like regular numbers, which is not always the case. Forces are vectors and have both magnitude and direction, so they must be added using vector addition rules.

3. Can polygonal addition of forces ever be used?

Yes, polygonal addition of forces can be used in some cases where all the forces are acting in the same plane and have the same direction. In these cases, the polygonal method will give the correct resultant force.

4. How can I find the resultant force of multiple forces if polygonal addition is invalid?

The correct method to find the resultant force of multiple forces is to use vector addition. This involves breaking down each force into its components and then adding them together using the rules of vector addition.

5. What are some examples where polygonal addition of forces would not work?

Some examples where polygonal addition of forces would not work include forces acting in different planes or forces with different directions. It would also be invalid for non-coplanar forces, where the forces do not lie in the same plane.

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