Feynman:"Laws of Dynamics" vs "Law of Dynamics"

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In The Feynman Lectures on Physics, Feynman refers to "the law of dynamics" in the singular when discussing Newton's Second Law, which contrasts with the more common terminology of "Newton's Laws of Motion." This choice appears intentional and may reflect Feynman's unique perspective on the subject. The discussion highlights a potential inconsistency in terminology, yet it is viewed as an artistic nuance rather than a strict error. Section 9.5 aims to clarify the relationship between force, acceleration, and displacement, centering on the significance of Newton's Second Law. Overall, the conversation emphasizes the interpretive depth of Feynman's writing style in physics.
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This is an observation, not a criticism. I noticed that in The Feynman Lectures on Physics Vol-I, Chapter 9
Newton's Laws of Dynamics in section 9.5 he speaks of "the law of dynamics" in the singular

"That is where the law of dynamics comes in. The law of dynamics tells us what the acceleration is."

It's clear from the grammatical context that this is no mere typo. He is specifically intending Newton's Second Law, ##F=\frac{dmv}{dt}##. The terminology ingrained in my mind for Newton's three laws is "Newton's Laws of Motion" (which Feynman offers as an alternative).

If I wanted to be exceedingly pedantic, I could say that his inconsistent usage is in error by the very fact that it is inconsistent. I prefer to look upon it as an artistic nuance giving us insight into the workings of his mind.
 
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I thought section 9.5 was to explain what eqn 9.12 signifies and the relation of force and thus acceleration with the displacement! well you only find that one in second law. I mean Newton's second law is sort of like the one with the that kind of relation. I think! :confused:
 
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