Two identical charged particles each having a mass 10 g and charge 2.0 $\times$ 10$-$7C are placed on a horizontal table with a separation of L between them such that they stay in limited equilibrium. If the coefficient of friction between each particle and the table is 0.25, find the value of L. [Use g = 10 ms$-$2]
Solution
<p>According to given information:</p>
<p>${{k{Q^2}} \over {{L^2}}}$ = $\mu$mg</p>
<p>Putting the values, we get</p>
<p>L = 12 cm</p>
About this question
Subject: Physics · Chapter: Electrostatics · Topic: Coulomb's Law
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