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A 1.41 kg object is held 1.38 m above a relaxed, massless vertical spring with a force constant of 288 N/m. The object is dropped onto the spring.

(a) How far does the object compress the spring?

1 m

(b) Repeat part (a), but now assume that a constant air-resistance force of 0.872 N acts on the object during its motion.

2 m

(c) How far does the object compress the spring if the same experiment is performed on the moon, where g = 1.63 m/s2 and air resistance is neglected?

3 m

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# Homework Help: Gravitational PE, Elastic PE

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