Question

Explain the similarities and differences between the gravitational force, electrostatic force, and electromagnetic force.

Explain the similarities and differences between the gravitational force, electrostatic force, and electromagnetic force.

Homework Answers

Answer #1

Similarities

  1. All the mentioned force follows inverse square law, i.e. the strenth of all these force is inversely proportional to the square of the separation distance between the object's centers
  2. All these force are central forces i.e. angular momentum conservation occurs
  3. All the three forces are conservative forces

Differences

  1. Gravitational force is always attractive however electrostatic and electromagnetic forces can be attractive as well as repulsive.
  2. Gravitational force does not depend on the medium, whereass electrostatic and electromagnetic force does depend on the medium
  3. Electrostatic force is the force between static (not moving relative to each other) electric charges. Electromagnetic forces are any interactions due to photon exchange and incudes electrostatic forces.
  4. Gravitational force are generated from mass however other two forces are generated from charges.
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