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Classical mechanics discusses the behaviour of macroscopic bodies under the influence of forces (without necessarily specifying the origin of these forces). If it's possible, USE MORE SPECIFIC TAGS like [newtonian-mechanics], [lagrangian-formalism], and [hamiltonian-formalism].
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1
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Motion in a central field in Landau Mechanics
What does this mean when E=U_eff?
I don't think this means the first term in E is zero. I don't understand the sentence ' This is a cubic equation for cos(theta)'
23
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5
answers
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Adding a total time derivative term to the Lagrangian
This is proof that $L'$ represents same equation of motion with $L$ through Lagrange eq.
I understand $L'$ satisfies Lagrange eq, but how does this proof mean $L'$ and $L$ describe same motion of par …
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1
answer
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How to find equations of motion when potential is given by inverse-square? [closed]
When potential is $U=-\dfrac{a}{r^2}$ ($a>0$), how can I find $r=r(\phi)$?
I'm trying to solve this problem during several hours.
From $E=T+U$, and constant angular momentum $L$, I can get the integ …
5
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1
answer
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What is a point transformation? [duplicate]
This problem comes from Goldstein.
What does $s=e^{\gamma t}q$ mean? Do I just put $q=e^{-\gamma t}s$ into the Lagrangian?
But I don't know what that means.
I think the point transformation may …