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Springs

Calculations of objects on springs exhibiting simple harmonic motion.

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Springs

Measuring the elasticity of materials

Simulation

Mass & Springs (PhET Simulation)

Time for Practice

  1. A rope can be considered as a spring with a very high spring constant k, so high, in fact, that you don’t notice the rope stretch at all before it “pulls back.”
    1. What is the k of a rope that stretches by 1\;\mathrm{mm} when a 100\;\mathrm{kg} weight hangs from it?
    2. If a boy of 50\;\mathrm{kg} hangs from the rope, how far will it stretch?

Answers to Selected Problems

  1. a. 9.8 \times 10^5 \;\mathrm{N/m} b. 0.5 \;\mathrm{mm}  

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