Chapter 27 Problem 69
From 105/106 Lecture Notes by OBM
Revision as of 04:04, 9 April 2019 by Obm (talk | contribs) (Created page with "==Problem== thumb|right|A sort of “projectile launcher” A large current moves in a closed loop composed of fixed rails, and there is a ver...")
Problem
A large current moves in a closed loop composed of fixed rails, and there is a very light, almost frictionless bar touching the rails. A 1.8 T magnetic field is perpendicular to the plane of the circuit. If the rails are a distance = 24 cm apart, and the bar has a mass of 1.5 g, what constant current flow is needed to accelerate the bar from rest to 25 m/s in a distance of 1.0 m? In what direction must the field point?
