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This is probably really simple but i dont know if this is the right way to work out the answer

i have attached an image containing the problem.

I know how to get F2 :

Taking moments about A:

F2 Cos 60 = 1500

F2 = 3000N

But then it says to find F1 using the principle of moments, and the only way i can get the answer is:

taking moments about B: (F1 x 1.5) = (1500 x 2.5)

F1 = (1500 x 2.5) / 1.5

F1 = 2500N

is this right?

Thanks alot

Cain

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# Homework Help: Principle of moments

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