Two masses $M$A and $M$B are hung from two strings of length $l$A and $l$B respectively. They are executing SHM with frequency relation $f$A = 2$f$B, then relation

Question

Two masses $M$_A and $M$_B are hung from two strings of length $l$_A and $l$_B respectively. They are executing SHM with frequency relation $f$_A = 2$f$_B, then relation

${l_A} = {{{l_B}} \over 4}$ does not depend on mass

${l_A} = 4{l_B}$, does not depend on mass

${l_A} = 2{l_B}$ and ${M_A} = 2{M_B}$

${l_A} = {{{l_B}} \over 2}$ and ${M_A} = {{{M_B}} \over 2}$.

Solution

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