Physics

Problem

Three point charges

q

-2q

and

2q

are placed on

x

-axis at a distance

x = 0

x = \frac{3}{4}R

and

x = R

respectively from origin as shown. If

q = 2 \times 10^{-6} \text{ C}

and

R = 2 \text{ cm}

, the magnitude of net force experienced by the charge

-2q

is _____ N.