Search any question & find its solution
Question:
Answered & Verified by Expert
A $50 \mathrm{~kg}$ girl wearing high heel shoes balances on a single heel. The heel is circular with a diameter $1 \mathrm{~cm}$. What is the pressure exerted by the heel on the horizontal floor?
Solution:
2273 Upvotes
Verified Answer
Here, $\mathrm{m}=50 \mathrm{~kg} ; \mathrm{r}=\frac{\mathrm{D}}{2}=\frac{1}{2} \mathrm{~cm}=\frac{1}{200} \mathrm{~m}$
$$
\begin{aligned}
\text { Pressure } &=\frac{\text { force }}{\text { area }}=\frac{\mathrm{mg}}{\pi^2} \\
&=\frac{50 \times 9.8}{(22 / 7) \times(1 / 200)^2}=6.24 \times 10^6 \mathrm{Nm}^{-2}
\end{aligned}
$$
$$
\begin{aligned}
\text { Pressure } &=\frac{\text { force }}{\text { area }}=\frac{\mathrm{mg}}{\pi^2} \\
&=\frac{50 \times 9.8}{(22 / 7) \times(1 / 200)^2}=6.24 \times 10^6 \mathrm{Nm}^{-2}
\end{aligned}
$$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.