Unformatted text preview: the magnetic force acting on the rod in terms of its subsequent speed v, and use this to derive a mathematical expression for the rod's subsequent speed v(t) as a function of time t in terms of m, H, R, B, and v o . (f) Show that your algebraic result for v(t) is physically reasonable and has the correct units. (g) Use your result for v(t) to show that after the external force is removed, the total distance the rod subsequently moves = mv o R/B 2 H 2 . [HINTS: Rememberâ€”as the rod slows down, the current decreases, and so does the magnetic force. To find v(t), you'll need to derive and solve a simple differential equation like one we used in RC circuits.] (4) #29.30 [Induced E Field] (5) #29.52 [Make a Generator] Please add: (c) Draw a graph of the emf in the loop as a function of time t, and label both axes with numerical values. (6) #29.65 [Motional emf]...
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This note was uploaded on 12/25/2009 for the course PHYS 213 at Cornell.
 '08
 PERELSTEIN
 Physics, Work

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