Questions on Motion; Proportional Ratios
Mover versus moved, the fastest phase, and why circular motion throws in a straight line
Short lettered ratios head the page — a 4, b 6, c 2, d 4, ab 10 — with a note that a to c is 'dupla' (double), 4 to 2. Below, three entries each headed 'On motion' pose questions: which is faster, the motion of the mover or the motion it causes; in what part of its motion the mover has the greatest velocity; and why circular motion, though uniformly swift, moves the bodies that separate from it along a straight line.
On this page
Three questions on motion
Under the repeated heading 'On motion' Leonardo asks which is swifter, the motion of the mover or the motion caused by it; in what part of its motion the mover has more velocity than in any other; and why circular motion, though equally swift throughout, throws off the bodies that leave it along a straight line.
Lettered ratios: a to c is double
At the head of the page lettered quantities carry values (a 4, b 6, c 2, d 4, ab 10), and a small note sets a against c as 'dupla' (double), 4 to 2.