1,495 reputation
924
bio website martin-ueding.de
location Germany
age
visits member for 3 years, 1 month
seen Nov 19 at 13:42

Oct
15
awarded  Yearling
Oct
9
awarded  Notable Question
Oct
9
awarded  Inquisitive
Oct
8
accepted Does the commutator of anything with itself not vanish?
Oct
8
comment Does the commutator of anything with itself not vanish?
@StevenMathey I will do that, I just wanted to have a little background for that.
Oct
8
asked Does the commutator of anything with itself not vanish?
Aug
13
comment Moving wedge and pulley system
That is exactly the force that I mean!
Aug
13
comment Moving wedge and pulley system
Comment 1 & 2: You are right with your argument, except that one could include the the acceleration. Imagine $m_2 = 0$. Then $m_1$ would be free falling and would not pull on the pulley. Therefore, the friction is only caused by $M$ alone. Then $a$ is large, the normal force of the wedge will be less, so will the friction be. Since this turned out to be rather complicated, I suggested that you can just assume $a$ so small that it does not have any impact on the friction. Comment 2: The tension $T_2$ pulls $m_2$ to the left, but the reactio force pulls the wedge to the right.
Aug
13
revised Moving wedge and pulley system
Remove $g$.
Aug
12
answered Moving wedge and pulley system
Aug
12
answered What is the relative acceleration of a projectile fired at in a low gravity vacuum?
Aug
12
accepted Why are the energy eigenstates realized in atomic transitions?
Aug
12
answered Inertia and momentum
Aug
12
answered Physical Quantities
Aug
12
comment Why are the energy eigenstates realized in atomic transitions?
So there is no transition from one mixed state to the other? It is the case (spectra), but why?
Aug
12
asked Why are the energy eigenstates realized in atomic transitions?
Jul
24
awarded  Enlightened
Jul
24
awarded  Nice Answer
Jul
24
answered Could two identical stars revolve around each other in a common orbit if we only account for Newtonian physics?
Jul
22
comment Given eigenvalues of $\vec l^2$ and $\vec s^2$, calculate the eigenvalue for $\vec j^2$
Thanks, I think this is going to become interesting in the review of the exam, then.