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Nov
8
reviewed Approve The harmonic oscillator - ladder operators
Nov
8
answered Artificial Gravity
Nov
7
comment Determine if an object is in orbit
@MrUniverse, If you want to plot a perfect trajectory of an object under influence of multiple massive bodies, you'll have to solve the kinematical equations using newtonian gravity, which is possible(I think) but tough and no general solution usually exists. So you will have to compute the trajectory for every case separately.
Nov
6
comment Determine if an object is in orbit
@dmckee, you can make it a multibody situation by making some assumptions, like multiple point like satellites(negligible mass) orbiting around a massive body(earth). In that case you can neglect the gravitational effect of the satellites on each other, and the program can still be a very useful real world simulation.
Oct
30
reviewed Reject How does gravity work underground?
Oct
25
answered Does Archimedes law depend of lack of matter?
Oct
25
comment Where does the extra force generated by a lever come from?
Now it does matter how long the lever is because the force of the fulcrum cannot make the lever rotate(it is applying torque in the wrong direction), so you need the 1lb of your finger to make the lever rotate, and so you need a long enough lever to make 1lb sufficient.
Oct
25
comment Where does the extra force generated by a lever come from?
Well its like, the lever supports the weight of the load, the fulcrum supports the total force the lever applies downward(force you exert from your hand + weight of the load, i.e. total force of lever + load system), and the ground likewise supports the force fulcrum exerts downward.
Oct
24
comment Where does the extra force generated by a lever come from?
What does "consistently have the same impact mean"? Anyway if you want to look at the forces on the load only, the lever will exert a normal force upward on the load, which in turn will create tension in the lever. So if you use a heavy enough load, the lever can snap apart
Oct
24
reviewed Edit Does a heavy body move with the slightest force on a frictionless surface?
Oct
24
revised Does a heavy body move with the slightest force on a frictionless surface?
inserted tag
Oct
24
comment Light behaves as a particle or wave in this thought experiment?
secondly, are you saying that no photons will reach the trough at all, if we look at it from the particle view-point
Oct
24
comment Light behaves as a particle or wave in this thought experiment?
You don't need to use a thin strip of metal, you can simply cover the metal plate with paper or something else and expose only the region of the trough.
Oct
24
answered Where does the extra force generated by a lever come from?
Oct
24
asked Light behaves as a particle or wave in this thought experiment?
Oct
24
answered Can the magnetic lines of force of two or more magnets intersect each other?
Sep
19
reviewed No Action Needed Heisenberg's uncertainty principle for electrons and atoms
Sep
16
reviewed Reviewed Energy and probability for the particle in a box
Sep
16
reviewed Reviewed Is spacetime all that exists?
Sep
14
reviewed Reviewed Is the total mass of the universe constant in time?