# AS Physics questionWatch

This discussion is closed.
#1
Design an experiment to investigate how the angle theta for a board depends on the speed of the horizontally moving air (aimed towards the board)

The angle theta is the angle the board is at from the horizontal. Board is moving anticlockwise.

I --> \

How would the stream of air be produced?
How would the speed of air be measured?
How would the speed of the the air be changed?
How would you measure theta?

I'm having a slight problem with this.
I know how I am going to measure the speed (digital anemometer)
Problem is, would this be available in a school/college?
How do I describe how I would change the speed of the wind? Do I just describe how I would adjust the settings on the device?
Finally, measuring theta. Would I just measure length of board, distance from hinge at maximum elevation and then use simple trigonometry? or is there more to it than that?

Also, what aspecrs of the design would ensure the accuracy and reliability of the your results.
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14 years ago
#2
I don't really understand the scenario. Do you have a diagram
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14 years ago
#3
I don't understand either.
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#4
Here is one.
The advertising board is attached to a hinge in still air.
Angle theta increases as wind speed increases.
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14 years ago
#5
oh I see. so I guess you'd need to consider things like where the air strikes the board (ie think about moments) ?
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#6
(Original post by endeavour)
oh I see. so I guess you'd need to consider things like where the air strikes the board (ie think about moments) ?
?? How can you do moments without an angle?
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