Answer:
[tex]2.56071\times 10^{-7}\ C[/tex]
Explanation:
k = Coulomb constant = [tex]8.99\times 10^{9}\ Nm^2/C^2[/tex]
g = Acceleration due to gravity = 9.81 m/s²
r = Distance between charge = 0.8 m
m = Mass of elephant = 1100 kg
[tex]q_1[/tex] = Mass on first charge = 3 C
The electrostatic force will balance the weight of the elephant as the energy in the system is conserved
[tex]\dfrac{kq_1q_2}{r^2}=mg\\\Rightarrow q_2=\dfrac{mgr^2}{kq_1}\\\Rightarrow q_2=\dfrac{1100\times 9.81\times 0.8^2}{8.99\times 10^9\times 3}\\\Rightarrow q_2=2.56071\times 10^{-7}\ C[/tex]
The charge on the other particle is [tex]2.56071\times 10^{-7}\ C[/tex]
