Electrostatics 12.23 19. Consider a non-conductihg ring of radius r and mass m and a particle of equal mass, both at rest in free space. The particle is on the axis of the ring and far away from the ring. An amount Q of positive charge is uniformly distributed on the ring and the particle is given a positive charge q. The particle is imparted a velocity u towards the centre of the ring. Find maximum speed the ring can acquire during the subsequent motion. Ans: U ifu< @q =R; ifu-k; 4(-JT-0 if u>K
Electrostatics 12.23 19. Consider a non-conductihg ring of radius r and mass m and a particle of equal mass, both at rest in free space. The particle is on the axis of the ring and far away from the ring. An amount Q of positive charge is uniformly distributed on the ring and the particle is given a positive charge q. The particle is imparted a velocity u towards the centre of the ring. Find maximum speed the ring can acquire during the subsequent motion. Ans: U ifu< @q =R; ifu-k; 4(-JT-0 if u>K
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19. Consider a non-conducting ring of radius r and mass m and a particle of
equal mass, both at rest in free space. The particle is on the axis of the
ring and far away from the ring. An amount Q of positive charge is
uniformly distributed on the ring and the particle is given a positive
charge q. The particle is imparted a velocity u towards the centre of the
ring. Find maximum speed the ring can acquire during the subsequent
motion. Ans: uifu< 0q =k;ų ifu-K y(1-1-8 ifuk
Electrostatics 12.23
0
yifu>k
20 Three identicalnarticles each ofř
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