IV. Exercises · Q5
Q.Draw the free body diagram for the following three charge situations shown in the figure:
(a) a charge of mass hanging from a string in a uniform field pointing horizontally, between oppositely charged plates;
(b) a charge on a spring of force constant , displaced by in a uniform field ;
(c) a small charge hanging by a string at angle to the vertical between charged plates.
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Start your 14-day free trial to unlock the full solution →Step 1. Case (a) -- charge on a spring in a field. The forces are the spring's restoring force (opposing the displacement ) and, if a uniform field acts on the charge, an electric force ; both act along the direction of motion.
Step 2. Case (b) -- charge falling between charged plates. The forces are the electric force (from the field between the plates) and the weight acting vertically downward; if the charge also rests on or is guided by a surface, a normal force is included. …
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