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During operation, the compressor unit of a refrigerator, with mass 7 5 kg and rotational speed 9 0 0 pm , experiences a dynamic force

During operation, the compressor unit of a refrigerator, with mass

75

kg and rotational speed

900

,

experiences a dynamic force of

200

.

The compressor unit is supported on four identical springs, each with a stiffness of k and negligible damping. Calculate the value of k if only

15 %

of the dynamic force is to be transmitted to the support or base.

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