1. Dynamic to static
  2. Rolling to sliding
  3. Sliding to rolling
  4. Potential energy to Kinetic energy
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1 Answers

Option 3 : Sliding to rolling

Reducing friction is altogether a different science which deals with ways and methods to reduce friction. A common way to reduce friction is by using a lubricant, such as oil, water, or grease, which is placed between the two surfaces, often dramatically lessening the coefficient of friction. The science of frictionand lubrication is called tribology.
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