(29-31) Suppose that the U-shaped conductor and connecting rod in Fig. 29-12a are oriented verticall

(29-31) Suppose that the U-shaped conductor and connecting rod in Fig. 29-12a are oriented vertically (but still in contact) so that the rod is falling due to the gravitational force. Find the terminal speed of the rod if it has mass m=3.6grams, length l=18cm , and resistance R=0.0013Ω. It is falling in a uniform horizontal field B=0.060T . Neglect the resistance of the U-shaped conductor.