Force on an object for different wind strengths

Shanty

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Funnily enough, I've just been doing that calculation. The formula you want is:

Force = 1/2 x density of air x area of mast x wind speed squared x shape coefficiant (for a round mast use 0.6)

Don't forget to allow for wind shear.
 

cpedw

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I endorse Shanty's response but feel compelled (in my capacity as an Engineering Lecturer) to point out that it's vital to use a consistent set of units when working out the sums.
For me, the only way to get right answers is to use SI units - density in kg/cubic metre (air 1.2); area in square metres, wind speed in metres/sec (1 knot=0.51m/s).
The force calculated will be in newtons; divide by 4.4 to get a result in pounds if you must.

Derek
 
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