Go with it man, take the courses and get them over with. I've realized there's a lot of discouragement on this forum, so if you want to go for something; get on it, ambition is what counts, but if you want to listen to others and keep asking these questions that's up to you. Anyways good luck...
Hi there,
I'm reading on the hamiltonian method and it says we can ignore constraints? Is this true, or am I missing something here, so if we have a constraint in the system we do not have to include it in the final calculation for the equation of motion?
Hope someone could clear this up, thanks!
Hey, I was hoping someone could clear this up for me. When using this method, how do you get the final equation of motion, that's where I am confused.
So I know I start off using Lagrangian (T - U) -> momentum (partial L/ partial q dot) -> Hamiltonian T+U, and then using the hamiltonian...
Hey CW, sorry this question was very vague I agree as I look at it now.
But, you said KE doesn't have a velocity? Are you just saying that because initially the system was at rest (so KE = 0)? Because KE = 1/2mv^2.
Yes, sort of, I was thinking more so for planetary motions, so let's say: If two masses are separated by a radius...and released from rest, I would say the same thing applies right?
Hey,
Say we have an object released at rest, separated by a certain distance..blah, blah, blah. When we use conservation of energy here, the kinetic energy would have a initial velocity right?
So, K1+U1=K2+U2 assuming the object eventually comes to a rest...so U1 = 0, K2 = 0, so we would have...
Interesting, because recently I did a problem, for which the kinetic energy remained the same and the potential energy had changed, so that is where most of the confusion comes from.
Hey, so I have a question about motions of planets and their energy basically.
When we have a circular orbit, why is it that the kinetic energy is just the opposite of potential energy? (Assuming it's a closed orbit)
Like if we have U = something, than the kinetic energy T = -1/2U? This would...
Homework Statement
The net force on the mass is the central force F(r) = -k(r-a). Find the potential energy U(r).
a is the spring of natural length and k is spring constant k.
Homework Equations
-dU/dx = F(x)
The Attempt at a Solution
F(r) = - \frac{ dU }{ dr } implies -k(r-a) = - \frac{ dU...
Hey, what force classically held electron in the orbit? Also what force is it actually (quantum mechanics).
I think it was the electromagnetic force classically, I haven't been able to find a legit source that says it was directly that, but when I do calculations with electrons and atoms I'm...