Posted by **Anonymous** on Wednesday, October 5, 2011 at 7:48pm.

When a 2.50-kg object is hung vertically on a certain light spring described by Hooke's law, the spring stretches 3.13 cm.

a)What is the force constant of the spring?

b) If the 2.50-kg object is removed, how far will the spring stretch if a 1.25-kg block is hung on it?

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