Concept explainers
Archie designs an arch to serve as an outdoor sculpture in a park. The arch is to be a certain width and a certain height. To achieve the size and shape for the strongest arch, Archie suspends a chain from two supports of equal heights that are as far apart as the arch is wide. Archie allows the chain to hang as low as the arch is high. He builds the arch to have exactly the shape of the hanging chain, but inverted. Explain why.
To Explain: When the chain is hanged, it gets inverted in shape as that of arch.
Explanation of Solution
Introduction:
Gravity plays the role to pull everything towards it.
When the chain is hanged between two supports, it gets inverted. It is due to that fact that each small section (or part) of the chain is interconnected in such a way that it pulls the above parts downward and it happens because of the gravitational effect.
Conclusion:
When the chain is hanged, it gets inverted because of its structure and gravitational effect.
Chapter 18 Solutions
Conceptual Physics: The High School Physics Program
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