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Polygon of force
This topic just builds on the previous Triangle of Forces.
Consider three forces A, B and C. A and B can be added by drawing a triangle to give a resultant.
If force C is joined to this resultant, a further or "new" resultant is created, which represents the effect of all three forces.
Now this procedure can be repeated many times; the effect is to produce a Polygon of Forces.
Again, the resultant can be derived mathematically.
Explain moment of inertia Moment of inertia is the term used to calculate or quantify the amount of mass located at an object's extremities. For instance if all the mass of an
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