Question

Three charged particles are arranged in a line as shown in the figure below. Calculate the net electrostatic force on particle #3 due to the other two charges. -0.30 m----0.20 m + Q= Q2 = Q3 = -8.0 uc +3.0 C -4.0 MC x

Answer 1

Given information; churge on the particles 2 Q = 8. 4C - 8x10 c Q = +3 M C +3x106c Az = -4 u C = -4x10°C. distance between the churge, 713 0.3 +0.2 = 0.5 m 823 = 0.2 m we have to determine the net electrostatic force on the particle 3, due to other two charges. As Coloumb's Law, per Force on the particle 3 due to purticle', -F31 k 939 re 2 9x109x 64x106) x 6-8x106) (6.5² 1.152 N Forse_on_the_particle_3_due to pusticle 2,

Ezz k 93 92 2 33 9x10²x (-4x106) (3x108) (0.222 2.7 N sume Puoticle land 3, both are negatively charged, so the nature of the force Foi will be repulsive. Puzticle 3 and 2, both are opposite charged, so the nature of the force fe will be atrustive. Let us draw the force diugaum that acting on the puarticle 3. Q3 F32. El Net Nestso-static force on particle 3, Fnet F + Foz (1.152 2.7) N (-1.548) N Here, negative sign indicates that the net electrostatic foree on the particle 3 will be towards left. Net Electrostatic force on puzticle 3 will be -1.54.8 N