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When a 4.00 kg object is placed on top of a vertic


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Answer #1

Apply Hooke's law

The the weight of the object is equal to elastic potential energy of spring

F = kx = mg

Substitute given values

k ( 0.0217 m ) = (4.0 kg ) ( 9.8 )

Solve for k

k = 1806.45 N/m

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