Q1. Two particles are fixed on an x axis. Particle 1 of charge 40 micro-coulombs is located at x =-2 cm; particle 2 of charge Q is located at x = 3 cm. Particle 3 of charge magnitude 20 micro-coulombs is released from rest on y-axis at y=2 cm. What is the value of Q if the initial acceleration of particle 3 is in the positive direction of
The x-axis
The y-axis
Q2. A bar AB of negligible mass and length 2 m balanced at its midpoint a 4 kg and 5 kg masses are suspended from both ends. A 4 kg mass is 0.4m away from the midpoint. At what point the mass of 5 kg is suspended to a bar keep the balance?