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Friction — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceFriction1 Mark
MCQ
Ball bearing is a device which usually converts:
  • A
    Rolling friction into sliding friction.
  • B
    Static friction into sliding friction.
  • ✓
    Sliding friction into rolling friction.
  • D
    Rolling friction into static friction.
✓

Answer

Correct option: C.
Sliding friction into rolling friction.
Because rolling friction allows to move heavier objects from one place to other easily.

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