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Again, for some odd reason, people...

Apr2211 05:26 AM
ZapperZ

1 
48,282 
Hello everyone, I have a question about conservative forces.
I am given a function F = kx^2 + ax^2 + bx^4, where...

Oct1004 12:34 PM
MiGUi

5 
3,167 
When you define \vec F(\vec r) = \phi(r') (\vec r)/r
Now U is usually denoted
U(\vec r) = \int_0^r \phi(r')...

Feb2010 02:58 AM
Nusc

2 
574 
Why does work done by a conservative force = 0 in a closed path?
I know this sounds foolish :uhh: but how can some...

May1910 11:47 PM
vaibhav1803

5 
1,637 
Why is friction a nonconservative force ?
It arises to Electric interactions which is a conservative force(field).

Dec1811 04:50 PM
Bill_K

4 
1,256 
I have a general understanding of what a conservative force is. I am wondering if its possible to confuse a non...

May113 01:35 AM
Paintjunkie

0 
471 
I read in a book that if the constraint forces do work, the system is conservative, else it's nonconservative. In that...

Feb1113 05:19 AM
mickybob

4 
685 
Is there an inconsistency between the definition of conserved charge and conserved current in Hamiltonian and...

Mar1907 04:05 AM
da_willem

5 
2,557 
If one considers the Lagrangian of a nonrelativistic particle in a gravitational field,
L =...

Dec811 04:34 AM
haushofer

4 
1,223 
Hi all,
I am preparing for my "second chance exam" in analytical mechanics.
It is a graduate course i.e. based on...

Aug2214 11:38 AM
samalkhaiat

2 
246 
I wonder whether Lagrangian has to have some symmetry if there
exists a conserve quantity (reverse implication is...

Jan2911 03:41 PM
paweld

0 
893 
So having been through translation and rotation I can conclude that my book has found 3 conserved quantities in...

Oct2512 09:09 AM
Studiot

6 
1,021 
What is the role of Conserved quantities in physical system?

Nov409 12:02 PM
MaxwellsDemon

2 
863 
Consider the equilibrium situation on the picture attached.
The wire supports a rod attached to an axle in the wall...

Dec1511 07:19 PM
AlephZero

6 
1,092 
Hello!
yes is from Sweden and my English is not good, but will try to do as best as possible. My question is:
why...

Dec1309 12:11 PM
aloshi

1 
566 
Hello there!
In my last Electromagnetism lecture, the teacher explained that Newton's 3rd law doesn't work when we...

Apr2704 03:36 PM
Feynmanfan

3 
1,533 
When considering electric field in a dielectric media,there are two forms of Gauss's law:
\oint \vec{D}\cdot\vec{d...

Jul2713 08:40 PM
Simon Bridge

13 
695 
sorry i didnt use latex..I tried...its annoying
V=V(initial) + at....when you integrate both sides you get...

Sep1604 06:55 PM
Doc Al

3 
654 
Hi,
I hope it is a very simple mistake and easy to spot.
Suppose you start at rest so initial velocity is 0 and you...

Sep2511 08:37 PM
Ken G

7 
1,753 
Im wondering if somebody can show me how to derive the five equations used to solve these types of problems. Ive been...

Feb2209 06:49 PM
cam875

2 
1,728 
Hi everyone,
According to the equation Power = Force x Velocity or P = mav or a= P/mv, in order to keep say a...

Apr2409 07:37 PM
rcgldr

22 
5,108 
Hi, I have another question on the center of mass this time. I read a problem in my university physics book by sears...

Aug1704 09:36 PM
Cyrus

3 
4,057 
How do resistors of different resistances in series maintain constant current throughout a circuit? I mean is not the...

Sep310 12:15 PM
tasnim rahman

4 
5,104 
I do not know the exact electrochemical reactions which make a battery work, but I understand that the essential...

Apr2912 08:30 AM
phinds

16 
3,372 
Dear All,
Many thanks for reading this query. Actually, I am having problem in measuring the mode fields of Optical...

Nov1111 08:47 AM
taimoortalpur

2 
1,376 
My book says that you can change the temperature of a substance at constant internal energy by changing only the...

Jul2311 10:04 PM
gkangelexa

9 
3,080 
I'm programming a simple physics engine that works with rockets in space. I haven't done any physics since highschool...

Nov2910 11:33 AM
JacksonMarks

8 
1,225 
Momentum of a body can be constant while it accelerates? I mean if velocity increases while mass decreases...

Apr514 01:36 AM
Michael_25

8 
390 
I have little confusion, we know that if Lagrangian is from from variable \theta then conjugate momenta P_{\theta} is...

Jun2011 09:59 AM
vaibhavtewari

2 
1,293 
Hello all
I encounter a difficulty solving most simple problem related to constant power and speed of particle the...

Mar3005 02:09 AM
sAXIn

8 
3,817 
Can a thermodynamic system simultaneously exist under both constant volume and constant pressure at a particular...

Jun3011 02:58 PM
nasu

4 
1,827 
It is said that in an isobaric expansion of a gas pressure remains constant throughout the expansion process.
...

Apr2614 12:07 PM
Soumalya

14 
640 
hi ,this is my first post (and its not HW)
i currently study dynamics of rigid bodies
using (Hibbeler)
and theres...

Dec1110 05:39 PM
K^2

9 
1,094 
Assuming only air friction, do you think it is equally as energy efficient to reach a destination in a vehicle...

Apr2311 11:45 AM
Dmytry

7 
1,421 
Hi there! I am working on a project that requires some idea of adiabatic processes. I know the basics of the said...

Jan613 01:21 AM
andrien

4 
834 
Hi,
Does it make a difference if you use nitrogen gas or oxygen gas or hydrogen gas in the bulb ? Or they all give...

Oct2413 03:24 PM
Philip Wood

2 
488 
Hello
My story
Till today, I had never imagined that the High Heat Value (HHV) of fuels or their Lower Heat Value...

Aug2411 04:03 PM
lalbatros

0 
1,627 
In a question I tried to solved: "A house has wellinsulated walls. It contains a volume of 100 m3 of air at 300 K....

Apr2810 08:52 AM
HallsofIvy

5 
2,615 
why do most modern books claim the divergence of the E field is ρ/ε_{0} but in more classical books, and when you...

Aug112 03:01 AM
PhilDSP

5 
832 
Hey All,
I realise this is a slightly peculiar question  but does anyone know if there is any conserved quantities...

Oct1410 08:26 AM
thrillhouse86

0 
806 
By definition
total energy of a system= (internal energy U) + K.E + P.E
and
mechanical energy of a system= (flow...

Apr2912 01:14 AM
Ritz_physics

0 
514 