Recent content by kno

So when the work done is minimized the KE = 0? I thought I solved the problem that way initially by negating the KE in the W = -(EPE final - EPE initial) equation. The only other equation I know for work is W=FdcosΘ however I am not given the direction that the particle moves or its...

I know net work = change in KE. So by that equation work would be closest to zero when there is the smallest change in KE. Since the point charge starts at rest (I'm assuming) then the KE is zero. However I don't see how the kinetic energy can be zero in its final state to produce the smallest...

This is the figure for the problem: 1.) Solved for initial total EPE of the system EPE system = (kq2q3/a) + (kq2q1/b) + (kq1q3/√a^2 + b^2) 2.) Solved for final EPE of the system negating q1 as if it were off to infinity EPE system final = (kq2q3/a) 3.) Plugged values into equation W =...