What is the Height at which the Resultant of Three Forces Acts?

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The discussion revolves around determining the height at which the resultant of three forces acts above a base. The user expresses uncertainty about how to calculate this height and assumes it is less than 72 inches. There is a mention of needing to rearrange the forces into a formula where distance is not the variable. A calculation error is pointed out, suggesting that the initial result of -31,680 in.lbs is incorrect. The conversation highlights the need for clarification on the application of the moment equation M=Fd in this context.
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Homework Statement


Determine the height h above the base B at which the resultant of the three forces acts.
20150627_140043_zps9pcpzbnb.jpg


Homework Equations


M=Fd

The Attempt at a Solution


not sure how to get the height here. thanks
im assuming the distance they are asking is less than 72 in. but I am not sure how to find that.
I guess i would need to put my forces in a formula where d is not the variable.[/B]
20150627_134853_zpsqoca2qwb.jpg
 
Last edited:
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-31,680 in.lbs can't be right. Check your addition.
 
sweet thanks Nathanael!
 

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