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Consider a frictionless ramp on which a smooth object is made to slide down from an initial height $h$. The distance $d$ necessary to stop the object on a flat track (of coefficient of friction $\mu$ ), kept at the ramp end is
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Verified Answer
The correct answer is:
$h / \mu$
From the conservation of energy,
$$
\begin{aligned}
m g h & =\mu m g d \\
d & =\frac{h}{\mu}
\end{aligned}
$$
$$
\begin{aligned}
m g h & =\mu m g d \\
d & =\frac{h}{\mu}
\end{aligned}
$$
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