IB Physics HL Mechanics

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A sheet of questions on rolling objects, a topic in HL mechanics. These are explain questions requiring elaboration.

  1. A sphere rolls from rest down an inclined plane. A block of the same mass slides the same distance down a smooth inclined plane of the same angle to the horizontal. Which object reaches the bottom first? Explain.
  2. Why is friction necessary for rolling? Explain.
  3. Can we use the equation Ff = µ FN for rolling objects? Explain.
  4. Does friction force do work as an object rolls? Explain.