A 1.20 kg copper rod resting on two horizontal rails 0.90 m apart carries a current I = 55.0 A from one rail to the other. The coefficient of static friction between the rod and rails is , = 0.60. (a) What is the smallest vertical magnetic field B that would cause the rod to slide? ♡ B
A 1.20 kg copper rod resting on two horizontal rails 0.90 m apart carries a current I = 55.0 A from one rail to the other. The coefficient of static friction between the rod and rails is , = 0.60. (a) What is the smallest vertical magnetic field B that would cause the rod to slide? ♡ B
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A 1.20 kg copper rod resting on two horizontal rails 0.90 m apart carries a
current I = 55.0 A from one rail to the other. The coefficient of static friction
between the rod and rails is , = 0.60.
(a) What is the smallest vertical magnetic field B that would cause the rod to
slide?
Direction
of rails
B
i (into page)
(b) Suppose a B field is directed at some angle to the vertical , with the current
along the rod directed into the page, as shown. Find an expression for B as a
function of for the case when the rod is just on the verge of beginning to slide.
(c) Find the value of which yields the smallest value of B that would cause
the rod to slide, together with the corresponding value of B.
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