Hi ya'll! I've been thinking of making a portable hammock stand and I have a question that I can't quite figure out with my minimal trig and physics knowledge.
I created a sketch based on this awesome diagram that Knotty created. Here is mine:
Now, I know that S (the horizontal force pulling the ends of the uprights towards each other) and T (the tension on the suspension lines) varies depending on the weight in the hammock (W) and the suspension angle.
My question concerns the force pulling down on the eyebolt (the red arrow in my diagram). Is it the weight in the hammock (W), or is it something else? If it is something else, how do I compute it?
The reason I'm asking is I would like to build the stand out of square aluminum tubing and I'm concerned about the eyebolt "egging" out the holes where it runs through the tubing. If it's only the weight in the hammock I don't think it would be a big deal if I put a nut and washer on each side of the bolt to tighten it against the upright, but if the force is huge I may have to use something else.
Thanks in advance for your thoughts.
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