How to use Kleppner and Kolenkow and how to employ problem solving?

Click For Summary

Discussion Overview

The discussion revolves around the use of the textbook "Kleppner and Kolenkow" (K&K) for learning classical mechanics, with participants sharing their experiences, challenges, and strategies for problem-solving. The conversation touches on the difficulties faced by students, especially in the context of online learning and time constraints due to recent disruptions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested
  • Homework-related

Main Points Raised

  • Some participants express difficulty in solving K&K problems despite understanding the underlying concepts, particularly with constraint equations.
  • One participant suggests a strong foundation in analytical geometry, trigonometry, and calculus as essential for tackling K&K problems.
  • Another participant mentions the challenges of self-studying K&K outside of a structured class environment.
  • Several members note that K&K is considered difficult even for advanced students, and emphasize the importance of persistence in problem-solving.
  • Working through K&K alongside other texts, such as John Taylor's "Classical Mechanics," is proposed as a beneficial strategy for understanding the material better.
  • Participants discuss the differences between K&K and Taylor's text, with Taylor covering more advanced topics like Lagrangian and Hamiltonian mechanics.
  • There are mentions of varying educational approaches to classical mechanics in different countries, highlighting differences in curriculum structure.

Areas of Agreement / Disagreement

Participants generally agree on the challenges posed by K&K and the need for a solid mathematical foundation. However, there are differing opinions on the effectiveness of various study strategies and the comparative difficulty of K&K versus other texts like Taylor's.

Contextual Notes

The discussion reflects a range of educational experiences and methodologies, with some participants noting the impact of recent changes in learning environments on their studies. There is also an acknowledgment of the varying levels of mathematical sophistication required for different texts.

Who May Find This Useful

This discussion may be useful for undergraduate physics students, educators seeking insights into teaching classical mechanics, and anyone interested in the challenges of learning advanced physics concepts.

warhammer
Messages
164
Reaction score
33
I am an undergrad in Physics and got acquainted with the aforementioned book.

I want to know how the other PF Members have used the book as such, and do they have some advice for me on the same.

I am also inclined to know how does one solve the problems of K&K whose concept may be straightforward & understandable yet the problem solving method to "attack" the question doesn't click. For instance, extensive usage of constraint equations gets a bit tricky even if one understands the underlying concept behind the problem. This is just an instance, and I dearly wish to know the PoVs of fellow members!
 
Physics news on Phys.org
I would make sure that analytical geometry and results pertaining to similar triangles, congruent triangles, congruent angles are understood.

Trig: law of sines, cosines, and other topics found in a standard trigonometry class.

Single variable, and multi-Variable calculus.

If a problem is too hard, try rereading the relevant section(s). Also, maybe adding your own constraints to make the problem easier, then generalizing it as you go, in order to solve the given problem.

It doesn't hurt to work out problems from a standard physics book without looking up the solution. I found KK a bit difficult, but manageable. Looking up solutions will come to haunt you later down the road, so get into the habit of not doing that.
 
  • Like
Likes   Reactions: yucheng and warhammer
warhammer said:
I want to know how the other PF Members have used the book as such, and do they have some advice for me on the same.
KK was the assigned text in my classical mechanics class many years ago. So the prof lectured from it and assigned problem sets. Are you using it on your own, outside of class? I think that would be very difficult unless you are a determined and disciplined student. I sure was not.

@MidgetDwarf offers good advice.
 
  • Like
Likes   Reactions: warhammer
gmax137 said:
KK was the assigned text in my classical mechanics class many years ago. So the prof lectured from it and assigned problem sets. Are you using it on your own, outside of class? I think that would be very difficult unless you are a determined and disciplined student. I sure was not.

@MidgetDwarf offers good advice.

Thank you for your response. Actually KK is the standard textbook being used and prescribed by our Prof. However there is a lot of learning crunch due to online only method as well as time constraint due to a truncated semester as a result of Covid lockdowns etc. So things are a bit rushed and Prof. is a bit overwhelmed.
 
  • Like
Likes   Reactions: PeroK
Just spend a lot (a lot) of time thinking about the problems (and try doing them, even if you get stuck multiple times by multiple approaches). Don't worry, K&K is (very) hard even for seniors in physics. Later, when you learn the methods of analytic mechanics like the Lagrangian formalism, you will find that they make many K&K problems easy. But till then they are hard for almost everyone.

I'm very glad I don't have to do K&K problems anymore. 😅
 
  • Like
  • Wow
Likes   Reactions: yucheng and warhammer
atyy said:
Just spend a lot (a lot) of time thinking about the problems (and try doing them, even if you get stuck multiple times by multiple approaches). Don't worry, K&K is (very) hard even for seniors in physics. Later, when you learn the methods of analytic mechanics like the Lagrangian formalism, you will find that they make many K&K problems easy. But till then they are hard for almost everyone.

I'm very glad I don't have to do K&K problems anymore. 😅
Sorry for such a late response sir. Thank you so much for your guidance. I have gauged a very strange thing. Working through K&K in conjunction with a book like Classical Mechanics by John Taylor (considered to be a level higher than K&K) has been quite helpful! As directed however, I will continue to keep attacking the problems and resist the urge to look at the solutions!
 
  • Like
Likes   Reactions: atyy
warhammer said:
Sorry for such a late response sir. Thank you so much for your guidance. I have gauged a very strange thing. Working through K&K in conjunction with a book like Classical Mechanics by John Taylor (considered to be a level higher than K&K) has been quite helpful! As directed however, I will continue to keep attacking the problems and resist the urge to look at the solutions!

When I was an undergrad, I often did this. Peeking at the next level text (even if I didn't really understand it at that level) helped me see the bigger picture and appreciate what would become more important later. Of course, I still had to understand the current-level text.
 
  • Like
  • Haha
Likes   Reactions: yucheng, warhammer, vanhees71 and 1 other person
Can you, perhaps, write two lines why Taylor's Classical Mechanics text is "next level" compared to Kleppner & Kolenkov?
 
Taylor covers Lagrangian and Hamiltonian mechanics. It is suitable for upper-division undergrads. K&K is, or at least was, used for MIT's freshman physics class.
 
  • Like
Likes   Reactions: warhammer
  • #10
The problems from Taylor were a bit easier than K&K in my experience. Mind you I had a teacher for Taylor and not for K&K.
 
  • #11
Vanadium 50 said:
Taylor covers Lagrangian and Hamiltonian mechanics. It is suitable for upper-division undergrads. K&K is, or at least was, used for MIT's freshman physics class.

Oh, so this is the American way, how many times does go through classical mechanics until graduation as a Bachelor of Physics? Two or three times?
 
  • #12
Well, in Germany we have mechanics in the 1st semester in both the experimental and the theoretical physics course lecture ("naive Newtonian mechanics") and in the 2nd semester in theoretical physics ("analytical mechanics", i.e., action principle and all that).
 
  • Like
Likes   Reactions: warhammer and weirdoguy
  • #13
dextercioby said:
Can you, perhaps, write two lines why Taylor's Classical Mechanics text is "next level" compared to Kleppner & Kolenkov?
Taylor is more sophisticated mathematically. The second chapter, for example, deals with linear and quadratic air resistance.
 
  • Like
Likes   Reactions: warhammer
  • #14
dextercioby said:
Oh, so this is the American way, how many times does go through classical mechanics until graduation as a Bachelor of Physics? Two or three times?
When I was in college, it was twice. The first time was in the intro physics course. This was the sequence physics majors and engineering majors took. For some students, it's the first time they've taken a physics course. Then in the junior year, physics majors would take a course in classical mechanics, which covers the same basic concepts as in intro physics but in a more mathematically sophisticated way and also covers Lagrangian and Hamiltonian mechanics.
 
  • Like
Likes   Reactions: warhammer

Similar threads

  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 46 ·
2
Replies
46
Views
10K
  • · Replies 24 ·
Replies
24
Views
3K
  • · Replies 12 ·
Replies
12
Views
2K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 7 ·
Replies
7
Views
15K
  • · Replies 24 ·
Replies
24
Views
3K
  • · Replies 9 ·
Replies
9
Views
3K
Replies
22
Views
3K
  • · Replies 16 ·
Replies
16
Views
3K