A spring with an unknown force constant is compressed by an object of an unknown mass.(the diagram looks like the spring is vertical and the mass is placed perpendicular to the cross-section of the spring.) The original length of the spring is 60 cm. When the mass was placed above the spring, the length was compressed to 50 cm.(meaning the change in the length is 10 cm). Calculate the spring force constant. Diameter of the spring cross section is 8 cm. Thanks!!

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