Comparing Electrostatic and Gravitational Forces

Question

A system contains two particles of charge $$+q$$ and mass $$m$$, and a third particle of charge $$-q$$ and mass $$2m$$. What is the minimum magnitude of $$q$$ required for the electrostatic repulsion between the identical particles to exceed their gravitational attraction?

Accepted Answer

$$q > \sqrt{20\pi \varepsilon_0 G m^2}$$

Answer

$$q > \sqrt{4\pi \varepsilon_0 G m^2}$$

Answer

$$q > 2\sqrt{\pi \varepsilon_0 G m^2}$$

Answer

Any non-zero value of q is sufficient

Comparing Electrostatic and Gravitational Forces

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