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Problem 22.11: Coulomb force and spring force

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A 20-gram charged ball is connected to a spring and placed on a frictionless tabletop as shown (position is given in meters and time is given in seconds). Restart.

  1. Find the equilibrium position.
  2. Find the spring constant.

Add a 2-μC charge on the right-hand side of the table.

  1. Has the spring constant changed? Explain.
  2. Find the new equilibrium position.
  3. What is the charge on the ball?
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