- #1
Leo Consoli
- 39
- 5
Homework Statement
A particle of mass M, with charge Q is left at the point A. After reaching point P the particle is at the effect of a constant and uniform magnetic field of intensity B reaching point Q.
Find H.
Homework Equations
P=mg
Fm=qvB
Ke=(mv^2)/2
U=mgH
The Attempt at a Solution
The big problem is not solving this question, because I was able to do that, but I didnt understand why during the trajectory from P to Q the particle has no gravitational potential energy.
The solution:- During the trajectory from P to Q the direction of the movement doesn't change so the magnetic force must cancel out with the weight of the particle.
So, using conservation of energy we get that:
This is the right answer but I am still confused.
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