A wire of length L is hanging from a fixed support. The length changes to L1 and L2 when masses 1 kg and 2 kg are suspended respectively from its free end. Then the value of L is equal to :

Question

A wire of length L is hanging from a fixed support. The length changes to L₁ and L₂ when masses 1 kg and 2 kg are suspended respectively from its free end. Then the value of L is equal to :

$\sqrt {{L_1}{L_2}} $

${{{L_1} + {L_2}} \over 2}$

$2{L_1} - {L_2}$

$3{L_1} - 2{L_2}$

Solution

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