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 the figure. 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 0.78mΩ resistance and a mass of 5.6g. Ignore the resistance of the rails.
(Figure 1)
What is the magnitude of the force on the
wire?
-180 N
What will be the wire's speed after it has slid a distance of
6.5cm?
The current is
A device called a railgun uses the magnetic force oncurrents to launch projectiles at very...
1.) A rail gun uses electromagnetic forces to accelerate a projectile to very high velocities. The basic mechanism of acceleration is relatively simple and can be illustrated in the following example. A metal rod of mass 30.0 g and electrical resistance 0.100 Ω rests on parallel horizontal rails that have negligible electric resistance. The rails are a distance L = 6.00 cm apart. (Figure 1)The rails are also connected to a voltage source providing a voltage of V = 5.00...