1) An electromagnet produces a magnetic field with a magnitude of 0.580 T in a c
ID: 3899681 • Letter: 1
Question
1) An electromagnet produces a magnetic field with a magnitude of 0.580T in a cylindrical region with a radius of radius 2.60cm between its poles. A straight wire carrying a current of 11.0A passes through the center of this region and is perpendicular to both the axis of the cylindrical region and the magnetic field.
What magnitude of force is exerted on the wire?
_____________________________ N
2) An Electromagnetic Rail Gun. A conducting bar with mass 28.0
A) 338N
B)to the right
C) It has been suggested that rail guns based on this principle could accelerate payloads into earth orbit or beyond. Find the distance the bar must travel along the rails if it is to reach the escape speed for the earth (11.2 km/s).
For simplicity, assume the net force on the object is equal to the magnetic force, as in parts A and B, even though gravity plays an important role in an actual launch into space.
___________________________ M
Explanation / Answer
a).
F = BIL
F = (0.580)(11)(6.76x10^-2)
F = 0.4312 N
b) a = F/M
= IBL/M
=0.4312/28
a=0.0154 m/s^2
c).
v^2 = 2aD
D = v^2/(2a) = (v)^2*M/(2IBL)
D = 11200^2*28/(2*1500*0.470*0.48)
D = 5189598.109 m
=5189 km
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