P29_072

# P29_072 - − 16 ˆ j(b The force exerted on the left half...

This preview shows page 1. Sign up to view the full content.

72. (a) From symmetry, we conclude that any x -component of force will vanish (evaluated over the entirety of the bent wire as shown). By the right-hand rule, a ±eld in the ˆ k direction produces on each part of the bent wire a y -component of force pointing in the ˆ j direction; each of these components has magnitude | F y | = i` | ~ B | sin 30 =8N . Therefore, the the force (in Newtons) on the wire shown in the ±gure is
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: − 16 ˆ j. (b) The force exerted on the left half of the bent wire points in the − ˆ k direction, by the right-hand rule, and the force exerted on the right half of the wire points in the + ˆ k direction. It is clear that the magnitude of each force is equal, so that the force (evaluated over the entirety of the bent wire as shown) must necessarily vanish....
View Full Document

## This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

Ask a homework question - tutors are online