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Arches - how strong are they?Featured science projectScience project video


The strength of the arch peaks at  a plywood length of 650mm  I don’t understand what this means.

Plywood length Weight applied to the plywood arch before it breaks
  500mm 550mm 600mm 650mm 700mm 750mm 800mm 850mm
Weight (kg) 7.3 8.9 12.4 16.5 16.4 16.2 15.9 15.5

The graph below represents the results of our experiment

construction science project

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Sawing should be performed by an adult wearing proper safety gear.