Homework Answers
The magnetic force on the rod, Fb = B * L * v
Where B is the magnetic field, L is the length of the rod and v is
the velocity of the rod.
Fb = 0.80 * 1.6 * 5
= 6.4 N
The mechanical force needed = Fb
= 6.4 N
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Suppose the rod is moving with a speed of 5.0m/s perpendicular to a 0.80-T magnetic field....
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A 0.480 kg, 37.5 cm long metal rod is sliding down two metal rails that are inclined 42.0° to the horizontal. The r...
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A 0.480 kg, 37.5 cm long metal rod is sliding down two metal rails that are...
A 0.480 kg, 37.5 cm long metal rod is sliding down two metal rails that are inclined 42.0° to the horizontal. The rails are connected at the bottom so that the metal rod and rails form a loop that has a resistance of 52.0 Ω. There is a 2.00 T vertical magnetic field throughout the region of the rails. The rod starts from rest and there is no friction between the rod and the rails a) (3 points) Find an...
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A metal rod of length l = 19 cm moves at constant speed v on rails of negligible resistance
that terminate in a resistor R = 0.2 ?, as shown in the figure above. A uniform and constant magnetic
field B = 1 T ia normal to the plane of the rails. The induced current is I =1 A and flows in the direction shown. Find :a) the speed v;m/sb) the external force needed to keep the rod moving at v.N to the right.
3. Electromagnetic Inductance. Consider a single loop under magnetic field. (a) If the area A = 0.012[m) is constant, but the magnetic field is increasing at the rate of 0.020 T/s), determine the induced emf. (Use Faraday's law; the induced emf in a loop equals the absolute value of the time rate of change of the magnetic flux through the loop.) (b) If the total resistance of the circuit is 5.0(82), find the induced current. (c) Suppose we change the...
A 0.480 kg, 37.5 cm long metal rod is sliding down two metal rails that are inclined 42.0° to the horizontal. The rails are connected at the bottom so that the metal rod and rails form a loop that has a resistance of 52.0 Ω There is a 2.00 T vertical magnetic field throughout the region of the rails. The rod starts from rest and there is no friction between the rod and the rails. a) (3 points) Find an...
A 0.480 kg, 37.5 cm long metal rod is sliding down two metal rails that are inclined 42.0° to the horizontal. The rails are connected at the bottom so that the metal rod and rails form a loop that has a resistance of 52.0 Ω. There is a 2.00 T vertical magnetic field throughout the region of the rails. The rod starts from rest and there is no friction between the rod and the rails a) (3 points) Find an...
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