Question

Three rigid rods ate joined to form an equilateral triangle abc of side 1m .three practices carrying charges 20microcoloumbeach are attached to the vertices of the triangle .the qhole system ia at rest i..an.inertial frame .the resultant force on the charged particle at a has the magnitude

Answer 1

Fnet=ma

a = acceleration of charge of particle at A = 0

So Fnet = 0

Answer 2

Zero

As the system is at rest acceleration is 0 , so net force is 0