The total energy of a pendulum is calculated either by it's maximum height (Gravitational Potential), or by the lowest point with maximum velocity (Kinetic Energy).
For the significant formulas of a pendulum see http://en.wikipedia.org/wiki/Pendulum_(mathematics)" wiki page
If you use the...
It does - The ball hits the tray and then they each get different velocities figured out by the regular elastic collision equations:
V1 + U1 = V2 + U2
M1V1 + M2V2 = M2U2 + M1U1
Y-E-S!
Got it.
Thanks Doc; I assumed at the beginning that there should be some movement together because there was a spring, but come to think of it, there really shouldn't be.
Correct answer - 5/6 m
Equation - Uelastic + Ukinetic +Ugravity = Uelastic
Gothican
But if we wanted to, we could just add a mirror in front of one of them, so that one of their phases would bump back \pi. Then the phase of both of the detectors would match - & we would be able to define whether a signal interfered with itself or not, before we would measure the idler!
Right, but what would be the difference between an elastic collision as in this case, and a plastic (inelastic) collision?
Oh, and your answer isn't right - it should come out at around 80 cm.
I don't usually ask questions here, but I've been stuck for a v-e-r-y long time on this problem.
It goes like this:
A ball is dropped 1 meter above a tray connected to a spring. This is what it looks like:
O
|____|
><
<>
><
<>Mass of ball - 1kg
Mass of tray - 5kg
Spring - K = 100...
Wow Cthugha, You really managed to clarify this for me. Thanks for the great post.
Oh, and just to be sure - each time a idler photon goes through one of those mirrors and gets 'phased out', it immediately changes the signal's phase too (in the same order). Right?
Greetings from...
Wow. I finally got it. Thanks Cthugha.:blushing:
Just could you please explain to me the reason that the D0/D1 coincidence count is exactly mirrored by the D0/D2 coincidence (as seen http://en.wikipedia.org/wiki/Delayed_choice_quantum_eraser" .)
Why would the two detectors result in...
I don't think you get it. You can use which ever interpretation that you want, but you still won't be able to explain the time paradox.
Let's say you use the Bohmian interpretation; he says that this is an nonlocal universe and therefore the measurement you made on the idler photon (which...
I've been thinking about this weird experiment for a while and came up with a couple of insights:
* This experiment presents before us the paradox between our concept of time, and the photon's nature of living outside of time. For the photon, the idler and the signal were measured at the...
Thanks for all your answers.
To Fredric; Are you simply saying that when an object's mass is equal to 0, then it is irrelevant to give him any attribution to time?
What I was hoping to achieve was that a photon which leaves the sun, gets to Mercury and Pluto at the same time. Could this...
I been wondering about this question for a long time - If time slows down as your speed gets closer to the speed of light, then is there time at the speed of light?
First of all the graph of the equation of time/speed has an asymptote at v=c which means that if a mass is moving at the speed of...
Let me see if I understand, we can't tell the two types of signal photons apart (those whose idlers' which-paths were detected, and those that weren't) at the screen, unless you correspond between the idlers and the signals.. That way you don't change the past - you just interpret it.
But...
Thanks--but I don't understand--why is there a need to cross-correlate? where does the "noise" come from? is it because of the other particles whose paths have been definitively ascertained? if so, why not just get rid of particles pathways that can be definitively ascertained, and try the...