3. Three very long wires carries currents I and 31 as shown. The top wire is in instantaneous equilibrium a distance b above the midpoint between the two lower wires which are separated by a distance 2a. The bottom wires are fixed in place. What is the mass per length u of the top wire? Hint: Draw a free body diagram for a length L of the top wire. When you solve for the mass per length, the length L will drop out of the answer. Use your results from the first page for the magnitude and directions of the magnetic forces between currents. 31 31 2a - · I a - 1-
3. Three very long wires carries currents I and 31 as shown. The top wire is in instantaneous equilibrium a distance b above the midpoint between the two lower wires which are separated by a distance 2a. The bottom wires are fixed in place. What is the mass per length u of the top wire? Hint: Draw a free body diagram for a length L of the top wire. When you solve for the mass per length, the length L will drop out of the answer. Use your results from the first page for the magnitude and directions of the magnetic forces between currents. 31 31 2a - · I a - 1-
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Transcribed Image Text:3. Three very long wires carries currents I and 31 as shown. The top wire is in instantaneous equilibrium a distance b
above the midpoint between the two lower wires which are separated by a distance 2a. The bottom wires are fixed
in place. What is the mass per length u of the top wire? Hint: Draw a free body diagram for a length L of the top
wire. When you solve for the mass per length, the length L will drop out of the answer. Use your results from the
first page for the magnitude and directions of the magnetic forces between currents.
31
b
2a
I
а-
a - -
I
I
31
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