Air pressure

The meteorological station measured the air pressure of 1060 hPa (hectopascals). In addition to measuring instruments, there is a residential house that has a flat roof with dimensions of 10 m and 28 m. What pressure force in MN (meganewtons) force the air on this roof?

Result

x =  29.68 MN

Solution:

a=10 m b=28 m S=a b=10 28=280 m2 p=1060 hPa p2=p/10/1000=1060/10/1000=53500=0.106 MPa x=p2 S=0.106 280=74225=29.68 MNa=10 \ \text{m} \ \\ b=28 \ \text{m} \ \\ S=a \cdot \ b=10 \cdot \ 28=280 \ \text{m}^2 \ \\ p=1060 \ \text{hPa} \ \\ p_{2}=p / 10 / 1000=1060 / 10 / 1000=\dfrac{ 53 }{ 500 }=0.106 \ \text{MPa} \ \\ x=p_{2} \cdot \ S=0.106 \cdot \ 280=\dfrac{ 742 }{ 25 }=29.68 \ \text{MN}



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