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aahas3
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I'm having trouble determining the sign conventions for the appropriate moments and which forces correspond to the appropriate moment analysis in the following question .The solutions are provided but i still need to know the fundamentals behind such selection and the sign conventions for it as the demonstrator explained how to use the right hand screw rule I am not really sure.
Egs When applying Fz = 400 how do we know the moment is positive giving 400*0.1 and the two right angle forces of 300. Their X components how do we discern whether their postive or negative when doing the moment equations.
Last how to know which forces should be used to determine the moment for the individual moment cases ies ƩMx or ƩMy. Thnks
Egs When applying Fz = 400 how do we know the moment is positive giving 400*0.1 and the two right angle forces of 300. Their X components how do we discern whether their postive or negative when doing the moment equations.
Last how to know which forces should be used to determine the moment for the individual moment cases ies ƩMx or ƩMy. Thnks