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## Homework Statement

The doorway in the previous question measures 1.06 m x 2.04 m, and the wind blows parallel to the wall surface at 3.89 m.s-1. Calculate the force pushing the curtains out of the doorway. The density of air is 1.29 kg.m-3.

Known data:

A = (1.06m)(2.04m) = 2.162 m^2

v(wind) = 3.89 ms-1

air density = 1.29 kg.m-3

## Homework Equations

F=ma

P=F/A

change in P = (density)(g)(h) ???

## The Attempt at a Solution

change in P = (density)(g)(h)

= (1.29) (9.8) (2.04)

= 25.79 Pa

P = F/A

F = PA

= (25.79)(2.1624)

= 55.77 N

I know my method is most likely wrong but I'm not too sure what other equations I could use, especially one that involves the velocity of the wind.