Question: A platform, having an unknown mass, is supported as shown in by four springs, each having the same stiffness k. When nothing is on

A platform, having an unknown mass, is supported as shown in by four springs, each having the same stiffness k. When nothing is on the platform, the period of vertical vibration is measured as 2.35 s; whereas if a 3.2-kg block is supported on the platform, the period of vertical vibration is 5.23 s. Part A Determine the mass of a block placed on the (empty) platform which causes the platform to vibrate vertically with a period of 5.62 s. Express your answer to three significant figures and include the appropriate units. MB = Submit Request Answer Part B What is the stiffness k of each of the springs? Express your answer to three significant figures and include the appropriate units. k = Submit Request Answer

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