Mathematics · Foundation

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Similar shapesRunning
Bridge scaler. Matching edge at 3.6 m. New shape ratio 28.8 m², Original ratio 168 m². Currently new shape ratio is short by 139.2 m².TUNINGREFERENCE 1 : 13.6 MPROPORTIONAL SPAN
t = 0.0s

New shape ratio

28.8m²

Original ratio

168m²

3.6 m

Bridge scaler. Matching edge at 3.6 m. New shape ratio 28.8 m², Original ratio 168 m². Currently new shape ratio is short by 139.2 m².

What has to balanceab=a′b′\frac{a}{b} = \frac{a'}{b'}

What is happening

You arrive at a replacement sail being cut from a photograph of the original.

The sail sets badly. The original measured 8 m by 12 m, the new luff is 14 m, and the matching edge is cut wrong.