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Rotational Mechanics — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsRotational Mechanics1 Mark
MCQ
A sphere cannot roll on:
  1. A smooth horizontal surface.
  2. A smooth inclined surface.
  3. A rough horizontal surface.
  4. A rough inclined surface.
  • A
    Only $A$
  • B
    Only $B$
  • ✓
    $A$ and $B$
  • D
    None of these
✓

Answer

Correct option: C.
$A$ and $B$
A sphere cannot roll on a smooth inclined surface and on a smooth horizontal surface because there is no backward force $($force of friction$)$ to prevent its slipping.

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