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A medicine ball was dropped unto a vertically mounted ideal spring. The medicine ball remained on the top of the spring as the spring compressed and stopped the medicine ball.
What is known is:

  • The mass of the medicine ball was 6.5 kg ($m = 6.5$ kg).
  • The spring compressed 0.87 m from its equilibrium position as it stopped the medicine ball (${x}_{max}= 0.87$ m).
  • The total vertical displacement of the medicine ball was 5.7 m: this displacement includes the distance that the spring compressed.

What is the spring constant, $k$, of the spring?


$97$ N/m


$810$ N/m


$830$ N/m


$950$ N/m

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