A small sphere with mass 5.00.×10−7kg and charge +3.00μC is released from rest a distance of 0.600 m above a large horizontal insulating sheet of charge that has uniform surface charge density σ=+8.00pC/m2.
a)Using energy methods, calculate the speed of the sphere when it is 0.250 m above the sheet of charge?
I just need help understanding what I have to do to get the speed. I tried finding the difference in potential to calculate the Work done and then find the final velocity from that. I tried using conservation of energy using Electric Potential energy, gravitational PE and KE.

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devil might be in detail.
what are you using for the electrical field of the sheet?

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