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Friction — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsFriction1 Mark
MCQ
A lift is moving downwards with an acceleration equal to acceleration due to gravity. A body of mass $m$ kept on the floor of the lift is pulled horizontally. If the coefficient of friction is $\mu$, then the frictional resistance offered by the body is
  • A
    $m g$
  • B
    $\mu \mathrm{mg}$
  • C
    $2 \mu \mathrm{mg}$
  • ✓
    Zero
✓

Answer

Correct option: D.
Zero
(d)

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