If you can’t build a mental model of what is going on, two or three small blocks of wood connected with cup?

Question by ericson c: If you can’t build a mental model of what is going on, two or three small blocks of wood connected with cup?
If you can’t build a mental model of what is going on, two or three small blocks of wood connected with cup hooks can enlighten the problem … Make sure you consider the fact that the railroad train car couplers have a good 3 inches of slack when they are hooked up. Write me up your answer

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Answer by billrussell42
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