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Classical Physics

- Principles developed before the rise of relativity and quantum mechanics. Mechanics, Electrodynamics, Thermodynamics, Optics...
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Before posting anything, please review the Physics Forums Global Guidelines. Again, for some odd reason, people...
Apr22-11 05:26 AM
1 41,728
We find in the literature the following relationships between electric field E and magnetic field B B(z)=E(y)V/cc...
Jul11-07 10:52 PM
4 22,889
Consider please a conducting wire located in a plane electromagnetic wave propagating in the positive direction of the...
Jul13-07 12:58 PM
2 1,557
Defining the period measured by a moving observer relative to a stationary source as T=t(n)-t(n-1) where t(n) and...
Aug30-07 04:19 AM
2 3,133
Consider the following statements: 1. If you move relative to me with velocity V I move relative to you with velocity...
Mar8-09 12:57 PM
5 830
Many sources on basic gravity, like this quote from Wikipedia, say: “In the case of a spherically symmetric mass...
Oct3-10 05:04 PM
Bernie G
16 1,494
This is problem from a text book whose solution I don't understand. A small rock of mass 0.5kg is attached to a...
Jun10-12 02:16 PM
5 1,378
I have a basic question regarding black body cooling. Suppose a person at sea level on a clear night, were to use a...
Jul20-07 08:33 PM
8 2,298
Ok, so I have a 405nm laser pointer (bluish purple/uv). Had a few miscellaneous glass objects and was shining it...
Mar11-14 02:37 PM
15 448
Hi, I just need to ventilate and see your opinions. Charge can be partitioned into groups of particles of one or...
Oct26-13 04:29 PM
11 783
Can we make a car or vehicle that can ride on the earths magnetic field here within the earths atmosphere?
Jun7-10 11:13 AM
1 581
Hi there! I have a question, I am trying to find the critical point of a phase transition. For example in the Ising...
Nov11-13 04:37 AM
0 271
Suppose that we will proof the continuity of the first maxwell equation: So we have div(\vec{E})=\frac{1}{\epsilon...
Nov3-07 09:46 AM
2 2,298
Where can I find online a good set of rigid body dynamics exercises? Thanks.
Jul19-08 06:05 AM
2 1,201
This is a question which I have been been tossing around for some time. By looking at gravitationally induced...
Jan8-11 10:32 AM
6 5,055
I'm designing a paddle wheel drive house boat and need to do some calculations to see if the parts I have on hand can...
Aug19-09 03:32 PM
0 3,523
I am attempting to design a base to support a post that will be pulled horizontally at its top. A 2D image of the...
May3-12 05:12 PM
7 2,819
Could someone show me the simple formula, showing how quickly an item sinks in water. Presumably the formula...
Jul17-08 11:59 AM
4 2,766
if i am finding the equipotential lines by using a conducting sheet, power supply, and muiltimeter to find the...
Sep24-07 06:43 PM
Claude Bile
1 3,454
In 3-D dynamics why is the angular momentum not aligned with angular velocity? Does this mean H = Iw is wrong in 3-D ?
Nov14-05 02:11 PM
2 2,236
let us consider a charged body is connected with a massless spring. the system is connected with wall. Now the spring...
Nov19-04 05:35 AM
0 910
Hi Everyone; I hope this is the right forum. Here's the issue... with fixed pitch propeller aircraft, thrust is...
Nov16-08 10:30 PM
16 2,041
Hi Can anyone tell me the differences between normal light (waves of the EM spectrum, i.e. visible light, gamma...
Feb9-06 05:57 PM
Claude Bile
5 1,458
Block 1 has a mass of 2kg and is moving to the right on a frictionless surface at 10m/s. Block 2 is ahead of Block 1,...
Jul17-13 03:22 AM
6 601
A ball is attached with a string on the side. When the string is pulled up, static friction accelerates the ball...
Aug17-13 08:56 AM
7 757
The formula of friction force is Ff = μN can also be defined as Ff = μ.m.g One of my friend say that...
Jan22-11 03:21 AM
4 2,574
I was reading Goldstein's Classical Mechanics vol.2 to brush up, and didn't get far before I got stuck. The book warns...
Aug15-11 08:48 PM
5 1,820
I feel like I am just plugging into equations when I solve physics problems and I dont know how to be creative in my...
Nov11-08 06:36 AM
8 2,800
i need help on a physics project that is due tuesday. the objective is to use a small solar collector to collect...
Jan12-04 03:56 PM
3 1,568
A few friends and I built a wave "machine." It's made by laying out brass "rods" about a foot long next to each other...
May23-08 08:49 PM
3 4,900
I'm kind of confused about how tension works. For example, If I had two blocks that massed 5kg hanging on either...
Feb10-09 02:15 PM
1 681
When exactly are they conserved? For example, one question involved a person jumping off of a circular platform...
May10-09 06:41 PM
Cantab Morgan
3 4,115
Hi, thank you for reading this topic. This is something that really bothers me...First of all let me say that I...
Oct18-12 04:09 PM
8 3,279
I found via this forum the hint to use the inverse squared equation to differentiate to find the resonance frequency...
Jul28-11 10:29 PM
4 1,973
This is a similar answer to a closed thread, which asked for the amplitude of a pendulum as a function of the bob's...
Jun25-13 05:36 PM
0 256
I proposed a new hydroelectric energy idea to somebody and they asked me for a "energy balance". I know nothing about...
Aug10-12 03:54 PM
2 530
object is the shape of a ball 300 feet in diameter. (~100m) object weighs 100,000 lbs (~50,000 kg) object is at a...
Aug12-12 11:43 AM
6 1,427
Is there a formula for this? if object is 300m deep, 30m in diameter, 50,000kg, in a ball shape how long will it take...
Aug13-12 11:03 AM
36 2,003
Hi, I'm trying to calculate theoretical energy generated by a system and I'm not sure if I'm doing it right and if...
Feb21-13 01:00 PM
9 680
Any help is appreciated, I'm really just trying to figure out if it can withstand 300 meters but it would be useful to...
Feb24-13 11:30 AM
4 1,014
Does it take the same amount of energy to lift water out of a tank as it would to force it out using compressed air?...
Feb24-13 06:00 PM
1 377

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