Question

Three point charges are located at the corners of an equilateral triangle, as shown in the figure. Calculate the net electric force on the 7.00 µC charge.

Answer 1

@Mashy

Answer 2

ok.. can you start working out? what is the part that you can't get?

Answer 3

the answer is already given to us : 0.873 N at 330°

but i got 0.9096N and theta is 33. 78°

anyway...
I got \[F(of 3 wrt 1) = k \left| (-4\times10^-6) (7\times10^-6)\right|\div (0.5)^2\]
= 1.008 N

did i got that right?

Answer 4

wait huh.. lemme check!

Answer 5

thats perfect.. and the force woudl be towards the 4 microC charge..

ok.. now you need force on 7 micro due to 2 micro.. how much u get that?

Answer 6

that should be half of it!

Answer 7

so its 0.504 N

Answer 8

yea i get 0.873 N as well .. as the net result!