Multiple-Concept Example 8 reviews the concepts from this chapter that are perti

Question

Multiple-Concept Example 8 reviews the concepts from this chapter that are pertinent here. Two rigid rods are oriented parallel to each other and to the ground. The rods carry the same current in the same direction. The length of each rod is 0.66 m, while the mass of each is 0.086 kg. One rod is held in place above the ground, and the other floats beneath it at a distance of 6.7 mm. Determine the current in the rods.

The number of significant digits is set to 2; the tolerance is +/-1 in the 2nd significant digit

Explanation / Answer

0.086(9.8)=0.8428N due to gravity, since both of them are floating, this indicates that there is a counter force holding it up so its 0.8428N is the force.

use: eq 1: F=I L B sin x
B=(4pie times 10^-7)/(2pie 6.7*10^-3m) substitute back in to eq 1. solve for I which is:
B=2.98*10^-6

And substitute in the equation we get I

F=I L B sin x

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