Two point charges Q1 = 74.3 ?C and Q2 = 19.3 ?C are fixed on the two ends of the diameter of a semi-circle with a radius of r = 16.0 cm as shown in the figure.

A massless point charge Q = 96.0 ?C can slide on the semi-circle without any friction. At which value of the angle ? will the point charge Q be in equilibrum?

Transcribed Image Text:

Q₂ r r 0 r Q₂ Q₂ r r 0 r Q₂