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seen Nov 1 '13 at 18:16

Jun
18
awarded  Popular Question
Dec
1
awarded  Popular Question
Oct
23
awarded  Popular Question
Mar
13
awarded  Commentator
Mar
13
comment When should we use the concept of Impulse/Momentum instead of Force?
"Lets say you have a pulley system. A simple one: A person A is hanging from one end," I enjoyed reading the answer, until I read this peace of horror, specially that it's complemented with "and a block B of equal mass is on the other end.". Good, the person is dead in equilibrium.
Mar
13
comment When should we use the concept of Impulse/Momentum instead of Force?
but we can't find velocity without time, so I guess we need to know time anyway (if we could find time and velocity, we can find acceleration also.)
Mar
13
accepted Question about interaction between three objects
Mar
13
accepted Can we determine the force an object exerts by its mass and acceleration?
Mar
13
asked When should we use the concept of Impulse/Momentum instead of Force?
Mar
11
asked Does a cycle (in Simple Harmonic Motion) have to equal 2π?
Mar
1
revised Question about interaction between three objects
added 337 characters in body
Mar
1
revised Question about interaction between three objects
added 70 characters in body
Mar
1
comment Question about interaction between three objects
I have added my attempt David. Please open the question.
Mar
1
revised Question about interaction between three objects
added 596 characters in body
Mar
1
asked Question about interaction between three objects
Mar
1
accepted Two objects exert forces on each other, will the reactions affect them?
Mar
1
comment Can we determine the force an object exerts by its mass and acceleration?
I understand it's Newton's third law, but I thought that object B doesn't necessarily only exert the force object A is exerting on it. I can intuitively understand it has to be the only force, but how would I know using Newton's Laws? I mean, how did you conclude that the net force object X gets, is equal to the net force it exerts?
Feb
29
revised Two objects exert forces on each other, will the reactions affect them?
added 407 characters in body
Feb
29
comment Can we determine the force an object exerts by its mass and acceleration?
"If you are able to determine that object A is only subject to one force, then you can find that one force because you know it's equal to the total force. But that's the only case in which the mass and acceleration tell you about a specific force." Yes, I can find that one force that is being exerted on the object, but does that mean that the object has (or exerts) that amount of force? If yes, can you tell me how that is?
Feb
29
asked Two objects exert forces on each other, will the reactions affect them?