- #1
theBEAST
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Homework Statement
I attached the question as a picture to this thread
Homework Equations
M=Fd
The Attempt at a Solution
I was taught that the moment produced by two equal but opposite forces is the magnitude of one force multiplied by the distance between the two forces.
I used Pythagoras to solve for the distances between each of the couples and found sqrt32 and sqrt8 to be these distances.
Thus
M1= 150*sqrt32
M2=200*sqrt8
and the resultant moment
=M1-M2
=283Nm [clockwise]
This is not the answer, the method the answer key used was breaking up the couples into x and y. I don't understand why my method does not work as well.