Who was the creator of principle of inertia


by Aikon
Tags: galileu, newton first law
Aikon
Aikon is offline
#1
Feb14-13, 12:36 PM
P: 21
Hi all,

It is really a history question.
I read that Galileu developed the concept of inertia, but today I knew it from Newton's 1st law. So my question is: Both of them arrived at the idea independently? Was Newton aware about Galileu's work and used the law because it is the basis for his 2nd law F=ma?

Thank you,
Phys.Org News Partner Physics news on Phys.org
Sensitive detection method may help impede illicit nuclear trafficking
CERN: World-record current in a superconductor
Beam on target: CEBAF accelerator achieves 12 GeV commissioning milestone
mfb
mfb is offline
#2
Feb14-13, 03:34 PM
Mentor
P: 10,766
Every human, independent of the precise definition of that word in terms of our ancestors, discovers this concept before he/she learns a language.
Galileo and Newton just made them more accessible to a quantitative analysis.
mathman
mathman is offline
#3
Feb14-13, 03:38 PM
Sci Advisor
P: 5,935
Quote Quote by mfb View Post
Every human, independent of the precise definition of that word in terms of our ancestors, discovers this concept before he/she learns a language.
Galileo and Newton just made them more accessible to a quantitative analysis.
Not quite true. Aristotle thought that things would slow down (he didn't consider the role of friction). Galileo preceded Newton.

mfb
mfb is offline
#4
Feb14-13, 03:44 PM
Mentor
P: 10,766

Who was the creator of principle of inertia


Aristotle thought that things would slow down (he didn't consider the role of friction).
Conservation of momentum is a different thing. I think you need a concept of inertia to propose a violation of momentum conservation.
Philip Wood
Philip Wood is offline
#5
Feb14-13, 04:56 PM
P: 860
Galileo's notion of inertia seems to have been that bodies in circular motion keep going at constant speed. Descartes seems to have been the first to state that a body maintains its velocity (i.e. speed and direction) unless acted upon by an external force. It's stated, for example, in his 'Meditations' of 1642 (the year Newton was born).


Register to reply

Related Discussions
The principle of inertia and hypothetical FTL particles Special & General Relativity 5
Quantum nature of the inertia and Mach principle Quantum Physics 2
Please explain what an "axis of inertia" or "principle axis of inertia" is! General Physics 2
Measuring the moment of inertia tensor about the principle axes of a RC helicopter. General Engineering 3
If you were a creator god... General Discussion 6