P29_039 - 39. The applied field has two components: B x...

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

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 39. The applied field has two components: B x > 0 and B z > 0. Considering each straight-segment of the rectangular coil, we note that Eq. 29-26 produces a non-zero force only for the component of ~ B which is perpendicular to that segment; we also note that the equation is effectively multiplied by N = 20 due to the fact that this is a 20-turn coil. Since we wish to compute the torque about the hinge line, we can ignore the force acting on the straight-segment of the coil which lies along the y axis (forces acting at the axis of rotation produce no torque about that axis). The top and bottom straight-segments experience forces due to Eq. 29-26 (caused by the B z component), but these forces are (by the right-hand rule) in the ± y directions and are thus unable to produce a torque about the y axis. Consequently, the torque derives completely from the force exerted on the straight-segment located at x = 0 . 050 m, which has length L = 0 . 10 m and is shown in Figure 29-36 carrying current in the...
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