38. Let 12FGdenotes the force onq1exerted byq2and 12Fbe its magnitude. (a) We consider the net force on q1. 12FGpoints in the +xdirection since q1is attracted to q2. 13FGand14FGboth point in the –xdirection sinceq1is repelled by q3and q4. Thus, using d= 0.0200 m, the net force is ()()211213142222000029221925222| |(2)(4)44(2)4(3)1848.99 10 N m C1.60 10C113.52 10N182.00 10 meee eeFF F Fddddπε−−−−=−−=−−=×⋅×==××, or 251ˆ
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.