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seen Jun 29 at 18:28

Mar
9
comment Is there a sensible fully-discretized Hamilton's principle?
Second answer linked above has a good pointer: citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.369.391
Mar
9
asked Is there a sensible fully-discretized Hamilton's principle?
Feb
19
awarded  Tumbleweed
Feb
12
awarded  Editor
Feb
12
revised St Venant-Kirchhoff energy from geometric principles
added 29 characters in body
Feb
12
asked St Venant-Kirchhoff energy from geometric principles
Jan
17
comment Tricky question (physics)
There is not enough information to solve the problem numerically, exactly as you say.
Oct
23
accepted Why doesn't Newton's Second Law include higher-order mass?
Sep
27
awarded  Popular Question
Jan
15
comment Why doesn't Newton's Second Law include higher-order mass?
@Qmechanic Is there a compelling reason to start from a Lagrangian/Hamilton's principle? I always thought these were only valid because they "happen" to generate Euler-Lagrange equations that match Newton's law.
Jan
14
asked Why doesn't Newton's Second Law include higher-order mass?
Oct
25
asked If I roll an elastic plate into a cylinder, does it shrink?
Feb
11
awarded  Yearling
Dec
30
comment Why does the nature always prefer low energy and maximum entropy?
Of course, this raises the question of why entropy doesn't also increase into the past.
Jun
25
comment Why didn't Newton just propose the 2nd Law and leave it at that?
Fair enough, although you wouldn't need to postulate the third law as a separate "law"; it would be a consequence of the symmetries of the potentials you plug in.
Jun
25
comment Why didn't Newton just propose the 2nd Law and leave it at that?
However the third and second law could be condensed into an Only Law: $m\ddot{q} = -\nabla V(q).$
Jun
24
awarded  Scholar
Jun
24
accepted what is the 2D gravity potential?
Jun
23
comment what is the 2D gravity potential?
If their velocities are all also colinear, then yes, I would have expected so...
Jun
23
awarded  Student