deepak
Last Activity: 8 Years ago
since they have not mentioned anything about the nature of the two charges, let us assume that they are q1 and q2 respectively,
=> Fgravity=Felectrostatic
=>mg= kq1q2/r2
=>50x9.8= 9x109 ×(q1q2)
=>q1q2=54.4x10-9
if q1=q2=q
=>q=2.32x10-4 C
since no information on medium is given i assumed the setup to be in vaccum if the medium is not vaccum then k will vary
