Electrostatic Force Question: Am I Right?

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SUMMARY

The discussion centers on calculating the electrostatic force between two pith balls of equal mass and charge, specifically a 1.5g pith ball suspended by a string. When the second pith ball is brought close, they reach an equilibrium at a distance of 2.6cm apart, with the string making a 20-degree angle with the vertical. The correct approach to calculate the electrostatic force involves using the formula F = mgtan(θ), where θ is the angle of the string. This method confirms the relationship between gravitational force and electrostatic force in this scenario.

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Inquiring_Mike
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Here is the question...
A pith ball of mass 1.5g is suspended along a string which is attached to a non movable point, when a pith ball of equal charge and mass is brought close to the original pith ball. A state of equilibrium is reached and the pith balls are 2.6cm apart and the string attached to the suspended ball makes an angle of 20 with the vertical. Calculate the electrostatic force.

I think that the electrostatic force would just be mgtan(pheta)... Is that right?
 
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