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Spring constant in periodic motion

When a mass of 25.0 grams is suspended from a certain spring and lowered slowly until the spring stops stretching, the spring stretches 2.00 cm. What is the spring constant of the spring?
1.25 N/m
0.800 N/m
7.85 N/m
12.3 N/m

Solution Summary

The solution examines spring constants in periodic motion.