The discussion revolves around the direction of the magnetic force acting on a wire with a current moving down a slope. Participants are exploring the implications of the setup, which includes a current flowing into the screen and the wire's motion.
The discussion is ongoing with various interpretations being explored. Some participants are seeking clarification on the problem statement and the textbook's explanation, while others are trying to reconcile different viewpoints on the direction of the force relative to the current and movement.
There are references to diagrams and figures that may not align with the problem statement, leading to further confusion. Participants are also noting the need for precise wording in the problem to avoid misinterpretation.
In your original diagram you had the field vertical, but now you show force as vertical and field acting in the direction of v. Have you mislabelled the second diagram?Eitan Levy said:
I apologize, this picture isn't the same.haruspex said:
So what, exactly, is the answer given in the book?Eitan Levy said:
It says the force is opposing the velocity.haruspex said:
That is a bit vague. It does not necessarily mean that it acts antiparallel to the velocity, merely that it is in a direction that resists the movement.Eitan Levy said:
Please make sure you have stated the problem exactly as given, word-for-word. Sometimes, the reason a student is having difficulty is that they have misinterpreted the wording of the problem.Eitan Levy said:
I think what the textbook means to say is that the force is in the exact opposite direction of the current. I don't think a simple question from an assumable simple textbook would say otherwise.haruspex said:
Of the current? You mean, of the movement, perhaps? That is how Eitan is reading it, but that answer would be wrong.lekh2003 said:
Ah, yes the movement. Opposite the movement. But OP simply needs to make the problem a little more clear.haruspex said:
But it would not be directly opposite to the movement, would it?lekh2003 said:
Okay, so if we use the right hand rule with the velocity downwards and to the right, and the magnetic field upwards, then the force moves with the current. So, it is parallel, but not opposite. This is confusing me as well now, I might as well wait for the OP to respond and then continue.haruspex said:
Not sure what you mean by that. There will be an induced current. It is unclear to me whether the current stated in the question is this induced current or additional to it, but whatever...lekh2003 said:
Try googling Lenz's law.Eitan Levy said:
That only tells you the direction of the induced current. The resulting force will still be horizontal.Dadface said:
