Analytical formulation of Newton's Laws

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Discussion Overview

The discussion revolves around the historical development of the analytical formulation of Newton's Laws of motion, particularly focusing on the transition from Newton's geometrical proofs in the Principia to later analytical approaches. Participants explore the contributions of various figures in the history of physics, including Euler and Laplace, and question the origins of the equation F = ma.

Discussion Character

  • Historical
  • Debate/contested
  • Exploratory

Main Points Raised

  • Some participants note that Newton's Principia primarily uses geometrical proofs and lacks an analytical formulation, which has led to misconceptions about the origins of the equation F = ma.
  • One participant suggests that Euler's Mechanica of 1736 may be the first work to present an analytical formulation of Newton's mechanics, although they express uncertainty about specific sections of the text.
  • Another participant points out that Euler's work is calculus-based, contrasting it with Newton's approach in the Principia, which does not utilize calculus.
  • There is mention of Laplace's contributions to Newtonian mechanics, with a participant emphasizing that Laplace's work came after Euler's and also employed calculus.
  • One participant raises the possibility that Torricelli, a student of Galileo, may have been the first to express Newton's second law as F = ma, suggesting a historical precedence before Newton himself.

Areas of Agreement / Disagreement

Participants generally agree that Newton's work in the Principia does not include an analytical formulation and that Euler played a significant role in this transition. However, there is disagreement regarding who first articulated the equation F = ma, with multiple competing views on the contributions of Torricelli and others.

Contextual Notes

Participants express uncertainty about the exact historical timeline and the specific contributions of various figures, indicating that further research may be needed to clarify these points. There are also references to the challenges of translating scientific Latin, which may affect interpretations of historical texts.

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Greetings historians of physics!

Newton's Principia is written almost entirely using geometrical proofs and diagrams, barely using any calculus at all. It is thought that Newton was reluctant to use his calculus in this work, fearing that it would undermine its credibility and reception, since the calculus was heavily criticised at the time as being based on philosophically unsound vanishing departed infinitesimal quantities.

Further to this, we think of Newton as one of the founding fathers of modern science, yet the Principia is by no means a modern book. The Laws are stated in words, and there is not a single equation in the entire work. There is no analytical formulation presented at all. Newton laid out the physics of mechanics, but not the analytical approach. Many people are surprised by this, equating in their mind the equation F = ma as being Newton's work. The principle is, but not the mathematical statement.

Currently, I am trying to determine who first put forward the analytical formulation of Newton's Mechanics. I have a feeling it was Euler in his Mechanica of 1736. I am actually sure it was him, but reading the work so far, I have not come across the section (it's a dense book, and in Latin). [Perhaps I had better just keep on reading!]

Does anybody know the exact history of this matter? Was there anybody preceding Euler in this area?
 
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Of course - Euler formulated Newton analytically. The Mechanica is calculus based. It is Newton that does not use his own calculus in the Principia. The question concerns who was the first to use a modern mathematical approach to expounding Newton.

As to the English translation mentioned, it's useful but full of errors and uncorrected typos (with all due respect to the translator). Scientific Latin is a difficult language to make translations from.
 
Laplace wrote about Newtonian mechanics. I agree that Newton was a transitional figure. Keep in mind that if your work inspires a paradigm shift in our way of thinking, you yourself had to have lived and worked before that shift occurred. Also, remember that Newton wrote a million words on alchemy.
 
Yes indeed. Laplace was born in 1749, well after Euler's Mechanica of 1736. He used a strong calculus base for his formulation of classical mechanics, and was indeed. another man of great genius.

What I am trying to get at is who first wrote out N II as F = ma? There are hints that it may have actually been Torricelli, a student of Galileo, and this of course before Newton.
 

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