In Problem calculate the moment about point O, using Varignon’s theorem, resolving the for...

In Problem calculate the moment about point O, using Varignon’s theorem, resolving the force into its X and Y components at point B and at point C

Problem

Calculate the moment of the 550-lb force about point O shown without using Varignon’s theorem. Make a similar calculation using the theorem, resolving the force into its X and Y components at point A.