# Answer on Mechanics | Relativity Question for santhosh

Question #73081

What do you understand by the normal modes of a coupled oscillator? If a coupled

system has many normal modes, do all normal modes have the same frequency? In a

solid, the speed of elastic longitudinal wave is 1.35 m/s If the Young’s modulus of

elasticity of the solid is 2*10^11 N/m^2 , calculate its mass density

system has many normal modes, do all normal modes have the same frequency? In a

solid, the speed of elastic longitudinal wave is 1.35 m/s If the Young’s modulus of

elasticity of the solid is 2*10^11 N/m^2 , calculate its mass density

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