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Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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Jan16-12 Greg Bernhardt
Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people...
Apr22-11 05:26 AM
ZapperZ
1 48,195
Given a nylon guitar(e.g.) string stretched across 2 boundary nodes, a makeshift "nut" and "bridge" on a workbench. At...
Nov3-08 04:34 AM
matthewgill
1 1,188
Is it correct to say that a field (i.e. electric) travels at the speed of light? We've been taught that only...
Mar20-07 10:54 PM
BeauGeste
2 1,270
So from what I understand, right handed circularly polarized light has angular momentum +1, left handed circularly...
Jun4-07 08:26 PM
Claude Bile
22 3,286
Hi, I'm having trouble with an assignment problem. If you happen to have Hibbeler's Tenth Edition of "Dynamics" it is...
Apr7-05 01:23 AM
Andrew Mason
1 1,366
I've just finished my first term in an undergrad electromagnetism course using Wangsness as a textbook and we ended on...
Dec16-13 03:15 PM
tiny-tim
3 408
Noob, apologies to all. What is magnetic force? I can calculate it, and know that it is perpendicular to the motion...
Jul12-12 10:35 AM
Morgoth
8 1,341
I have a servo motor that is able to provide a torque of T Nm. A rod of mass m kg and length l m is attached to the...
Aug4-10 04:01 AM
becheras
0 594
This is interesting... How will the length and the mass of a golf club affect how far the ball will travel? What...
Jan6-11 07:46 PM
morrobay
4 1,872
Im trying to calculate the refelction angle of 2 points in a 2d plane, but not the same distance away from the...
Jan7-13 09:03 AM
becka221
2 991
I'm having trouble understanding the reflectivity and transmissivity (the ratios of energy reflected and transmitted...
Apr23-10 02:02 PM
becko
5 1,896
I'm trying to understand Newton's rings. So we have a plano-convex lens supported in a plane (please, see image here...
Apr29-10 11:01 PM
becko
10 3,279
I want to read Sommerfed Lectures on Theoretical Physics. I started with vol.1 Mechanics. Just wondering if anyone...
Sep11-10 08:00 AM
Jano L.
4 3,129
Hello. Can anyone tell me what is the "axis of figure" or "figure axis" ? This is in the context of rigid bodies,...
Sep7-10 01:05 AM
becko
3 1,180
In the definition of the heavy symmetrical top, must one assume that the fixed point lies on the fixed point? Thanks
Sep7-10 01:44 AM
becko
0 1,741
I need the general expression for the lagrangian density of a linear elastic solid. I haven't been able to find this...
Jan13-11 05:42 PM
jambaugh
1 1,176
I am building a jet boat as a project this year. I am going construct the impeller my self but don't know what...
Apr17-13 03:25 AM
CWatters
4 788
Hi I'm trying to get a better understanding of dispersion in light. Specifically, the relationship between...
Jan12-11 07:47 PM
Beer-monster
9 2,789
Hi, I want to graph the mechanical force and the electrical force generated by moving a ferromagnetic object into a...
Dec18-06 06:09 PM
BeerFizz
4 1,607
In the context of Newtonian mechanics, why are gyroscopes good navigational instruments? What is the best shape for a...
May31-05 05:16 PM
skeptic
2 1,715
Hi What is the fundamental reason why a fluid with laminar flow going through a constriction in a pipe has lower...
Nov16-08 06:20 PM
rcgldr
5 1,612
There is given two neutral parallel plates, distance between them is d. Between them is putted insulating plate with a...
Feb20-12 08:10 AM
Hassan2
1 991
HI all I am glad to join your community. Just thinking on this and I do not encounter a solution: We have...
May8-10 07:15 AM
jtbell
3 885
Sometimes during lunch time, strange talks appear :). And then great doubts about life and physics... Imagine two...
May13-08 07:09 PM
Shackleford
20 3,194
hi,everyone,could u please tell me the exact definition of energy?
Jan30-07 03:53 PM
ZapperZ
19 4,037
Hi i'm studying for a test, and in the suggested reading book review has a few equations that they talk about but i'm...
Apr21-05 01:13 PM
Meir Achuz
3 1,540
A colleague of mine has suggested using Liouville's Equation in order to calculate the probability of collision...
May18-09 09:46 AM
belliott4488
3 1,211
Hello, I am trying to determine the calculation to use to determine the force at which a disk plate will fail for...
Dec25-11 01:49 AM
nvn
2 1,679
Hey Guys! I need help with interpreting something regarding simple barometers. I believe I understand what is going on...
Apr8-12 02:13 AM
nicu
1 1,191
It is possible that a fixed point to be attracting but not Liapunov stable. I can't find any example of that.
Aug14-14 08:56 PM
beman
0 141
I completed the book 'Nonlinear Dynamics and Chaos' by Strogatz. What will be next good book to learn about nonlinear...
Aug16-14 08:01 PM
td21
1 162
Would someone please be able to run me through the different components of the Maxwell Stress Tensor equation. ...
Sep28-08 05:30 PM
Ben473
9 2,234
In rotational motion , the units for torque, \tau = r \times F , are N \cdot m and for work done by a...
Apr26-08 04:05 AM
benabean
5 2,494
Hi, I'm a first year physics undergraduate and doing a structure of matter course. I'm having difficult ...
May12-08 06:30 AM
benabean
0 1,447
I'm trying to build a strobe light with an adjustable frequency. I have 1.5V, 9V batteries,1 micro farad, 10 micro...
Mar15-11 08:16 PM
Curl
1 1,526
I was trying to derive the formula for the moment of inertia of a rectangular prism at its centre of mass. And ended...
Jan22-10 10:38 PM
benhou
15 7,242
I am doing some basic heat calculations about a CW laser illuminated tungsten tip (which should be used for...
Apr28-08 03:38 AM
Benindelft
2 1,550
how does the speed of sound vary with temperature in an ideal gas? how do we derive this relation?
Sep14-05 09:29 AM
benitta
4 1,030
Hi there. I got two questions for you: 1- How can I calculate the force of attraction in Newton of two bar magnets...
Jun10-08 07:56 AM
noneya44
2 7,796
I recently ran across an experiment which I needed to explain because it appeared to violate energy conservation. ...
May25-08 03:17 PM
benjum
0 3,195
Such a device would be a major breakthrough for both research and practical usage. This is not my area of expertise;...
Aug15-11 10:25 PM
uncanny_man
5 1,257

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