Question

The area of the tip of a screw Is 0.5 mm^2 and it's weight is 0.5 N. Calculate the pressure( in pa ) exerted by the screw on a wooden plank.

Answer 1

area of tip = $0.5mm^2$

converting $mm^2$ to $m^2$.

first we convert $mm^2$ to $cm^2$ and then to $m^2$

$0.5 * \frac{1}{10}* \frac{1}{10} cm^2$ = $0.5 * \frac{1}{100} cm^2$

=>   $0.5 * \frac{1}{100} cm^2 => 0.5 * \frac{1}{100} * \frac{1}{100} * \frac{1}{100} m^2$

=> $0.5 * \frac{1}{1000000} = 0.5 * \frac{1}{10^6} = 0.5 * 10^{-6}$$m^2$

pressure = force / area

=> $\frac{0.5}{0.5 * 10^{-6}}$ => $\frac{1}{10^{-6}}$ => $10^6 pascals$

the pressure is $10^6 pascals$

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Answer 2

Answer:

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