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Forces and Pressure. — Science STD 8 — Question

Tamilnadu BoardEnglish MediumSTD 8ScienceForces and Pressure.2 Marks
Question
Mention any three ways of minimizing friction.
✓

Answer

  1. By using lubricants:
    These are applied to surfaces to reduce the friction between the surfaces. Example Oil, wax, grease, and castor oil.
  2. With the help of polishing the surface:
    We sprinkle the fine powder on the carrom board and then we polish its surface to make it smooth so that the striker slides easily on the surface.
  3. By using ball bearing:
    We use lead shots in the bearing of a cycle hub because rolling friction is smaller than sliding friction.

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