1. The problem statement, all variables and given/known data Charge 1 (0.15 kg) in the following diagram is hanging from a light insulating thread, as shown in diagram (red is what I have added myself) Charge 2 is brought close and pulls charge 1 , deflecting the string away from the vertical axis by 40 degrees. The charges have the same magnitude, charge 1 is negative. A) Find the tension in the thread B) Find the charge on 2. 2. Relevant equations Fg=mg Fe=Kq2/r2 3. The attempt at a solution Vertical Fnet=0 0=FtCos40 + (-mg) Ft=mg/cos40 Ft=1.92 Horizontal Fnet=0 0=Fe+(-Ftsin40) 0=kq2/r2+(-1.92sin40) q=√(1.92sin40)(0.42)/(9x109) q=+/- 4.7x10-6C How does this look?