Question

Abc is an equilateral triangle made up of light rigid material. Find the frequency of small oscillations

Answer 1

$\begin{table}[] \begin{tabular}{llll} \hline \multicolumn{1}{|l|}{Element} & \multicolumn{1}{l|}{Percentage} & \multicolumn{1}{l|}{Atomic mass} & \multicolumn{1}{l|}{\begin{tabular}[c]{@{}l@{}}Constant in\\ sample\end{tabular}} \\ \hline C & 80 & 12 & 80 g \\ H & 20 & 1 & 20 g \end{tabular} \end{table}$