Should I Try Newtonian Mechanics Again?

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Discussion Overview

The discussion revolves around the participant's experience with Newtonian Mechanics and their contemplation of revisiting the subject. It touches on personal learning preferences, challenges with understanding concepts, and the role of memorization in learning physics. The scope includes conceptual understanding and personal reflection on studying physics.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant expresses a lack of enjoyment in learning Newtonian Mechanics, attributing it to not engaging with the textbook and struggling with memorization.
  • Another participant suggests that learning physics through memorization is ineffective, implying a need for deeper understanding of concepts.
  • A further comment questions whether the participant understands fundamental concepts, such as the definition of a Joule, rather than just the equations.
  • Concerns are raised about applying physics concepts to specific problems, such as calculating the velocity of a satellite in orbit, indicating difficulty in deriving equations from principles.
  • One participant argues that understanding the concepts can allow for derivation of equations without heavy memorization, using the example of circular motion.
  • Another participant expresses skepticism about the original poster's interest in physics based on their comments.

Areas of Agreement / Disagreement

Participants express differing views on the effectiveness of memorization in learning physics, with some advocating for a conceptual understanding while others question the original poster's interest in the subject. The discussion remains unresolved regarding the best approach to learning physics.

Contextual Notes

Participants highlight the importance of understanding concepts over memorization, but there is no consensus on how to effectively engage with the material or the participant's interest level in physics.

andyroo
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I took a term of Newtonian Mechanics (foundation of physics type of class) and found that I didn't enjoy it very much. I think it was because I never read the textbook and tried to just dive right into problems, I didn't feel attending lecture ever really helped explain things to me, and I also am not the biggest fan of memorizing equations. NOW, that being said, I've finished single-variable calculus and I am taking multi-variable and lin. algebra next fall term. I truly am interested in physics, but it seems like I'm only interested in it when it's on my terms, but I think it might be worth trying physics again.

Opinions? Thanks.
 
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If you were trying to learn physics by memorizing equations, you were doing it wrong.
 
Jack21222 said:
If you were trying to learn physics by memorizing equations, you were doing it wrong.

I don't mean like equations for entire problems. But let's say, whatever the equation for a Joule is...
 
andyroo said:
I don't mean like equations for entire problems. But let's say, whatever the equation for a Joule is...

Forget the "equation" of a Joule, do you know what a Joule is, without looking it up?
 
Meh. I'm leaning towards work
 
Like okay. I understand the differences between forces being acted ON an ojbect and BY an object, I understand work and etc. But here's my problem. Let's say the problem is, "Figure out the velocity of a satellite in orbit around the earth, given variables distance from earth, and et cetera type variables." I'd assume you use gravitational constant to figure out the problem in some way. I just cannot seem to figure out these types of equations though for some reason
 
andyroo said:
Like okay. I understand the differences between forces being acted ON an ojbect and BY an object, I understand work and etc. But here's my problem. Let's say the problem is, "Figure out the velocity of a satellite in orbit around the earth, given variables distance from earth, and et cetera type variables." I'd assume you use gravitational constant to figure out the problem in some way. I just cannot seem to figure out these types of equations though for some reason

You don't really need much memorization to solve something like that, though. If you understand what it all means, it's easy to derive. For instance, with your example:

v = d/t

In a circular orbit, d is given by d = 2\pi r (the circumference of a circle)

\implies v = \frac {2\pi r}{t}

You can derive that from the basic definition of velocity and simple mathematics.
 
You don't really sound like you like physics at all, to be honest.
 

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