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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 47,892
http://www.physicsforums.com/attachment.php?attachmentid=67782&stc=1&d=1395173030 Consider the following setup (see...
Apr6-14 01:26 PM
DaleSpam
54 1,792
Greetings, I fell upon a certain question and it seemed that no matter what I did I was unable to solve it. I wished...
Apr6-14 10:08 AM
nasu
11 401
Given a system's Lagrangian, How can we calculate the equilibrium points corresponding to the system? also how can we...
Apr6-14 08:12 AM
dauto
1 189
Greetings, I was thinking about bouncing a tennis ball against a wall and how its momentum and kinetic energy would...
Apr6-14 02:10 AM
d-richard
4 197
Hi, does somebody know a good website with many exercises about Lagrangian/Hamiltonian mechanics? And I mean problems...
Apr6-14 01:47 AM
UltrafastPED
1 214
Suppose we have two co-linear strings under tension, attached far away, and with propagation speed v. Let the strings...
Apr5-14 03:38 PM
Spinnor
0 249
As I understand it, The intensity and extensive thermodynamic system parameters can only be internal parameters. The...
Apr5-14 01:38 PM
yuiop
6 380
I was following along in my Thermodynamic textbook and began playing with some definitions. In the following...
Apr5-14 07:24 AM
UltrafastPED
1 207
Hi I am using Simple Harmonic Motion in a Matlab/Simulink model. Instead of using a motion for a simple pendulum, I...
Apr5-14 04:09 AM
T2theB
1 286
Momentum of a body can be constant while it accelerates? I mean if velocity increases while mass decreases...
Apr5-14 01:36 AM
Michael_25
8 381
(This is not a homework problem, but is just something I'm curious about.) If two rocks with different momentum...
Apr4-14 10:48 PM
cjl
16 399
So if I slowly pull the A string first B string will tear apart... Cause the A string will expand and it will pull the...
Apr4-14 05:31 PM
Ezio3.1415
2 199
Hello, I'm trying to make my own physics engine. I've already made one with momentum and an very easy collision...
Apr4-14 01:11 PM
craigi
5 397
Hi I have calculated angular acceleration which changes with time. I also have a moment(torque) which also changes...
Apr4-14 09:36 AM
james6008
4 329
A homogene rod with length "l" is placed vertically, and a nail is stabbed on the top of the rod (now the rod has an...
Apr4-14 06:43 AM
Andreas
0 241
I have just watched a MythBusters episode investigating whether a concrete glider could fly. They conclude that it was...
Apr4-14 02:29 AM
A.T.
14 413
Recently, Facebook suggested solar powered drones could be used to provide internet coverage in remote areas and they...
Apr3-14 03:02 PM
yuiop
5 431
EDIT : solved, thanks :)
Apr3-14 08:57 AM
CWatters
1 171
Is it possible for a magnetostatic field to exhibit vector circulation when no current ( free, bound or polarization )...
Apr3-14 12:58 AM
UltrafastPED
6 336
hey pf! so i have a small question when deriving the navier-stokes equations from newton's 2nd law. specifically,...
Apr2-14 11:06 PM
joshmccraney
6 279
Hi, I need help with the following equations. n = r/r (unit vector in r direction) v =d r/dt = dr/dt n +...
Apr2-14 07:03 AM
knockout_artist
4 299
If you stop cooling a resistor and stop current simultaneously then what happens to the temperature of the resistor in...
Apr2-14 03:05 AM
256bits
2 252
I'm wanting to get the time it would take a vehicle to travel a 1/4 mile coming out of a corner in the ideal world. By...
Apr1-14 06:06 PM
RedRook
17 559
I am trying to use thermodynamics manipulations in order to find \partialP/\partialV (at constant entropy) I tried...
Apr1-14 04:35 PM
rude man
1 244
I am doing a final year project, my Prof gave me 2 prism. He wants me to do so: A white laser is shot on a prism...
Mar31-14 10:18 AM
athrun200
5 301
If I have a pair of coils connected in an anti-helmholtz configuration, with current flowing oppositely in both, and I...
Mar31-14 09:49 AM
UltrafastPED
16 378
On the 2012 AP Physics C Mechanics test, I got confused by the sign conventions for torques on question 3....
Mar30-14 11:59 PM
Simon Bridge
1 231
I was wondering where the derivation of the formula Group Velocity = Phase Velocity + K(dVp/dK)
Mar30-14 01:55 PM
UltrafastPED
1 206
What happens To the force between 2 charges if a metal sheet or a dielectric sheet is kept in between the two charges...
Mar30-14 01:52 PM
UltrafastPED
1 210
suppose a solenoid has N turns What is the Flux through the Solenoid? similarly if a coil has N turns , what is...
Mar30-14 08:25 AM
K Dhiraj Bhak
2 250
How can I figure out how to calculate the heat/cooling exchange rate of water inside pex tubing? I want to build a...
Mar29-14 08:11 PM
Equinefencer
18 4,700
Hello, Question is about equation 5.71 ---to-----5.72 All that was done is algebra or trigonometry? Where do I...
Mar29-14 04:22 PM
knockout_artist
5 472
Hello, I'm currently working on simulations in Solidworks of the flow of air (v = 450 m/s) around a sphere (radius...
Mar29-14 03:48 PM
boneh3ad
1 232
The period of a satellite revolving around the earth earth at surface height is equal to the period of any mass thrown...
Mar29-14 07:26 AM
Ezio3.1415
3 364
First post here. This question has two parts. (1) Connecting the dots between the Impulse-Momentum Theorem and the Law...
Mar29-14 02:16 AM
jstad
2 348
Hello, Are spectral reflectance curves dependent on the interface between the reflector and surrounding medium? For...
Mar28-14 11:50 AM
Andy Resnick
1 280
Recently I am reading the papers in the field of PT symmetry systems. What I am confused is that in these papers,...
Mar28-14 02:16 AM
UltrafastPED
1 238
On page 122 of Born and Wolf's "Principles of Optics" the following equation for the trajectory of a ray of light is...
Mar28-14 12:45 AM
PhilDSP
6 446
I'm trying to understand why a superdeformed nucleus may be represented as bulging perpendicular to the axis of...
Mar27-14 11:05 PM
D H
40 1,402
I'm having a hard time understanding why the electric potential halfway between two equal but opposite charges is 0....
Mar27-14 09:23 PM
ZapperZ
6 532

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