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Now I am working on the chapter "Catenary" of the book "Mathematical Studies with Mathcad". See please one part here Catenary with load
I see that the value 630 feet is very... magic value.
See please:
What magic or someone others do we have in 630 feet - 192 m?
On picture from the book:
Werner! Where are you?
I have done the search in Internet one more. And what I got