Question

A girl weighing 50 kgs is standing on the ground wearing pencil heels, each covering an area of 1 cm2. Find the pressure exerted by the girl on the ground.
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Answer 1

We know that,

$P \: = \: \frac{F}{area}$

SI Unit of area is m².

So area =

$\frac{1}{10000} {m}^{2}$

$F = 50 \times 10 \: (as \: weight \: = \: m \: \times \: g)$

F = 500N

So P is equal to

$\frac{500 \times 10000}{1}$

$= 5000000 \: Pa$