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NEET 2007
Exam
NEET
Year
2007
Subject
Physics
Chapter
Laws of Motion

NEET 2007 · Physics · Laws of Motion

A block B is pushed momentarily along a horizontal surface with an...

A block BB is pushed momentarily along a horizontal surface with an initial velocity VV. If μ\mu is the coefficient of sliding friction between B and the surface, block B will come to rest after a time. A block B is pushed momentarily along a horizontal surface with an initial velocity V . If μ is the coefficient of

Options

  1. AgμV\frac{g \mu}{V}
  2. BgV\frac{g}{V}
  3. CVg\frac{V}{g}
  4. DVgμ\frac{V}{g \mu}

Correct answer

D. Vgμ\frac{V}{g \mu}

Step-by-step solution

By using v=u+atv=u+a t0=v−μgt⇒t=Vμg\begin{aligned} 0 & =v-\mu g t \\ \Rightarrow \quad t & =\frac{V}{\mu g} \end{aligned}$$
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