MCQ
$A$ cone of radius $r$ and height $h$ rests on a rough horizontal surface, the coefficient of friction between the cone and the surface being $\mu$ . $A$ gradually increasing horizontal force $F$ is applied to the vertex of the cone. The largest value of $\mu$ for which the cone will slide before it topples is
- A$\mu = \frac{r}{{2h}}$
- B$\mu = \frac{{2r}}{{5h}}$
- ✓$\mu =\frac{r}{h}$
- D$\mu =$$\sqrt {\frac{r}{h}} $

