Question

(a) A physics lab instructor is working on a new demonstration. She attaches two identical metal bails with mass m = 0.220 g to cards of length L as shown in the figure.

Both balls have the same charge of 6.80 nC, and are in static equilibrium when θ=5.30°, what is L (in m)? Assume the cords are massless.

(b) What If? The charge on both balls is increased until each cord makes an angle of θ=10.6° with the vertical. If both balls have the same electric charge, what is the charge (in nC) on each ball in this case? 

_______ nc

Answer 1

Hence charge on each ball will be apprx 300 nC

If convenient please upvote....

Answer 2

Two small beads having positive charges phi_{1} = 1.3q and q_{1} = 0 are fixed at the opposite ends of a horizontal insulating rod of length d=1.50 m, The bead with charge q_{1} is at the origin. As shown in the figure below, a third small, charged bead is free to slide on the rod. (a) At what position x is the third bead in equilibrium? x = (b) Can the equilibrium be stable? O Yes, if the third bead has a positive charge. O Yes, if the third bead has a negative charge. O No m