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Question: a certain metal frame supports a platform and motor the...

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A certain metal frame supports a platform and motor. The combined mass of the platform and motor is 500 kg. At a motor speed of 800 rpm, the platform oscillates with an amplitude of 5 mm. When the speed is 1000 rpm, the amplitude is 14mm. Determine the natural frequency of the system and the spring constant of the frame.

answer: omega_n = 126.29 rad/s and K = 7.975e6 N/m

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