Two identical simple pendulums each of length $5 \mathrm{~cm}$ are suspended from the same support. When the…

Two identical simple pendulums each of length $5 \mathrm{~cm}$ are suspended from the same support. When the bobs are given equal charge of $2 \mu \mathrm{C}$ each, distance between the bobs becomes $6 \mathrm{~cm}$. Mass of each bob is $\left(\mathrm{g}=10 \mathrm{~ms}^{-2}\right)$.
  1. $\begin{aligned} & \frac{4}{3} \mathrm{~kg}\end{aligned}$
  2. $\begin{aligned}\frac{3}{4} \mathrm{~kg}\end{aligned}$
  3. $\begin{aligned} & \frac{5}{3} \mathrm{~kg}\end{aligned}$
  4. $\begin{aligned} & \frac{3}{5} \mathrm{~kg}\end{aligned}$

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2017 (26 Apr Shift 2)

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