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A 10 kg instrument is to be mounted at the end of a cantilever arm of annular cross section The arm has a Young&39 s modulus of elasticity E 72 109 Nm2 and a mass density 2800 kgm3 If this

A 10 kg instrument is to be mounted at the end of a cantilever arm of annular cross section. The arm has a Young's modulus of elasticity E = 72 x 109 N/m2 and a mass density  = 2800 kg/m3. If this arm is 500 mm long, determine the cross-section dimensions of the arm so that the first natural frequency of the system is above 50 Hz.

 

Jun 25 2020 View more View Less

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