Question

How much pressure will a girl of 50 kg wearing heels with an area of cross section $1c{m}^2$ exert on the ground?

• A. $150\times {10}^{4}Pa$
• B. $250\times {10}^{4}Pa$
• C. $350\times {10}^{4}Pa$
• D. $450\times {10}^{4}Pa$

Answer 1

Answer: (B)

$250\times {10}^{4}Pa$

Total Area of cross section of two heels = 2 $c{m}^2$ = $2\times {10}^{-4}$ $m^2$

as Pressure = $\frac{Force}{Area}$ = mg/A = $\frac{500}{2\times {10}^{-4}}$ = $250\times {10}^4$ Pa

so option (B) is correct .