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PRACTICE / Elastic potential energy

Release is different from slow lowering

A 1 kg mass is attached to an unstretched vertical spring with k = 100 N/m and released from rest. Use g = 10 m/s².

Find its maximum downward extension.

Organize the givens & assumptions
  • m = 1 kg
  • k = 100 N/m
  • initial x = 0

g = 10 m/s²; ideal vertical spring fixed above; no losses; release from rest at natural length.

  1. A0.10 m0.10\ \mathrm m
  2. B0 m0\ \mathrm m
  3. C0.40 m0.40\ \mathrm m
  4. D0.20 m0.20\ \mathrm m

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