Question

A woman with a mass of $65kg$ puts all her weight on one heel of her high-heel shoe. The cross-sectional area of the heel is $1c{m}^2$. According to the table, if she is standing on a pane of glass that is flat against the ground, does the glass break :

• A. No, because the stress is less than the ratio for the ultimate strength to Young's modulus for glass
• B. No, because the stress is less than the ultimate strength of glass
• C. Yes, because the stress is greater than the ratio for the ultimate strength to Young's modulus for glass
• D. No, because the stress is greater than the ultimate strength of glass

Answer 1

The correct option is B No, because the stress is less than the ultimate strength of glass

$\left(B\right)$ No, because the stress is less than the ultimate strength of glass.

$m=65kg$

$A=1{cm}^2$

$=1\times {\left({10}^{-2}\right)}^2$

$=1\times {10}^{-4}{m}^2$