A bovine pulling 9 ropes attached to a pole in front of 4 wheels representing the wheels of a cart. ... "Any object struck or pulled at a distance from suo nascimento / its birthplace (fulcrum) is more easily pulled to the ground".
The tree trunk shown will be pulled to the ground by a single bull if pulled by rope 9.
As a consequence, Leonardo explains that it is easier to pull (or rotate) the larger wheel if it is of equal weight to the smaller ones.
In this experiment, Leonardo demonstrates that the further the distance of the applied force to the fulcrum of an object (suo nascimento/ its birthplace), the more easily it is rotated.
Credit : HK Sciences Museum.
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