PHYS208 Fundamentals of Physics II

Hint for Ch. 29, 54E

[definition of directions]

There will be a force on b pointing out of the page (screen), one on a pointing into the page (screen), and no force acting on c from the magnetic field. Don't forget the sine of the angle between iL and B in evaluating the magnitude of the magnetic force.

These two forces are equal and oppositely directed, acting through different lines of action, the center of each section. They form a force couple tending to rotate the loop about an axis midway between these two lines of action.


"http://www.physics.udel.edu/~watson/phys208/exercises/hints/29-54E.html"
Last updated Oct. 23, 1997.
Copyright George Watson, Univ. of Delaware, 1997.