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4.2 friction — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics4.2 friction1 Mark
MCQ
A cylinder of mass $10\,kg$ is sliding on a plane with an initial velocity of $10\,m/s$. If coefficient of friction between surface and cylinder is $ 0.5$, then before stopping it will describe ............. $\mathrm{m}$
  • A
    $12.5$
  • B
    $5$
  • C
    $7.5$
  • ✓
    $10$
✓

Answer

Correct option: D.
$10$
d
(d)$s = \frac{{{u^2}}}{{2\mu g}} = \frac{{10 \times 10}}{{2 \times 0.5 \times 10}} = 10\,m$

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