- #1
Blitzmeister
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Homework Statement
[This is the best image I could find]
The link on the bottom part of the rails is now removed creating two parallel wires that are not connected (so no longer U shaped but just two rails).
Now a wire of length L, mass m and resistance R slides without friction down parallel conducting rails of negligible resistance. The rails make an angle of θ with the horizontal and a uniform magnetic field B points vertically upward throughout the region. If the wire starts from rest, what emf will be observed across it after it travels 0.05m?
Homework Equations
I don't know if any that I know apply
The Attempt at a Solution
So if the bottom part of the rails were there, I would just need to apply Faraday's Law and be done: (e.g. ε = -dΦB/dt; ΦB = B dot A ∴ ε = BLvcosθ, then to solve for v we just set force of gravity equal to magnetic force and substitute back into original equation)
However, the bottom part of the rails is not there, and I don't know how to start. I would make a guess and say ε = 0 since there is no loop