Equations in Classical Mechanics

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Discussion Overview

The discussion revolves around the interpretation of mathematical expressions in classical mechanics, specifically the notation used in the equation F=ma and its relation to calculus concepts. Participants explore the meaning of "dx/dt" and its implications in understanding motion and forces.

Discussion Character

  • Conceptual clarification
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant expresses confusion about the meaning of "d" in the expression "dx/dt" within the context of the equation F=ma.
  • Another participant suggests that a foundational understanding of calculus, particularly differential calculus, is necessary to grasp the concepts in physics.
  • A different participant proposes that the correct term in the equation should be "dv/dt" instead of "dx/dt," indicating a potential misunderstanding of the variables involved.
  • One participant asserts that the original lecture indeed used "dx/dt" and provides a timestamp for reference.
  • A participant inquires about which type of calculus to study, listing several options and indicating familiarity with differential calculus.
  • Another participant recommends starting with differential calculus as a suitable approach for understanding the concepts discussed.
  • One participant references a video contrasting Aristotle's and Newton's laws of motion, highlighting differing views on the relationship between forces and motion.
  • A participant confirms that "x" refers to location in the context of the discussion.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the correct interpretation of "dx/dt" versus "dv/dt," and there are differing views on the necessity of calculus knowledge for understanding physics concepts.

Contextual Notes

The discussion reflects varying levels of familiarity with calculus and physics concepts, and some assumptions about prior knowledge are evident. The references to different interpretations of classical mechanics highlight the complexity of the subject matter.

Who May Find This Useful

This discussion may be useful for students beginning their studies in physics or calculus, as well as those interested in the foundational concepts of classical mechanics and the mathematical frameworks that support them.

wolfspirit
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hi
i am a bit confused watching lectures and reeding books i quite often come across dx/dt
and i don't know what the "d" is. the full equation is F=ma which was rewritable as F=m*dx/dt
many thanks for any help
 
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Sounds like you need to watch some lectures on Math. Calculus specifically. Of course to make sense of that you will need to be familiar with algebra.

Physics is a structure build on math. Without math you cannot do physics.
 
also in your eqn I think you mean dv/dt not dx/dt where v means velocity.
 
what type of Calculus should i be looking at? Differential Calculus, Ap calculus, Lambda Calculus or another type (i only know a bit of Differential Calculus)
Thanks
 
Start with differential calculus.
 
in the video he was contrasting Aristotles law with Newton's law. InAristotle's world F=mv and F is a function of x but in Newton's it was F=ma. Aristotle believed that forces cause motion whereas Newton believed that forces cause acceleration.
 
what is x is it location?
 
  • #11
thank you for your help :) it seams i have a bit of reading to do before i get back to the really interesting stuff
 

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