Question

A 0.50kg mass is suspended on a spring that stretches 3.0cm.
a. What is the spring constant?
b. What added mass would stretch the spring an additional 2.0cm?
c. What is the change in potential energy when the mass is added?
Conservation of energy is not my favorite......
(0.50*9.8N)/3cm = 1.63 N/cm
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