A device called a railgun uses the magnetic force on currents to launch projectiles at very high speeds. An idealized model of a railgun is illustrated in (Figure 1). A 1.2 V power supply is connected to two conducting rails. A segment of copper wire, in a region of uniform magnetic field, slides freely on the rails. The wire has a 0.85 mΩ resistance and a mass of 4.4 g . Ignore the resistance of the rails. The power supply is switched on. What is the magnitude of the force on the wire? What will be the wire's speed after it has slid a distance of 8.0 cm ?

Principles of Physics: A Calculus-Based Text
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ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter1: Introduction And Vectors
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A device called a railgun uses the magnetic force on currents to launch projectiles at very high speeds. An idealized model of a railgun is illustrated in (Figure 1). A 1.2 V power supply is connected to two conducting rails. A segment of copper wire, in a region of uniform magnetic field, slides freely on the rails. The wire has a 0.85 mΩ resistance and a mass of 4.4 g . Ignore the resistance of the rails. The power supply is switched on. What is the magnitude of the force on the wire? What will be the wire's speed after it has slid a distance of 8.0 cm ?

1.2 V
X
X X
15 cm X
X
X
xax
X
X
X X
X X X
X X
X
X X X
xUx x
B=0.80 T
Transcribed Image Text:1.2 V X X X 15 cm X X X xax X X X X X X X X X X X X X xUx x B=0.80 T
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