About Arrows
What makes arrows fly straight ?
Labels: funphysics, thinktank
posted by Rajesh Lal at
9:16 PM
Monday, December 14, 2009
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12 Comments:
Indians? ....
velocity
since it will crash before it changes its direction
the feathers
The fletching helps an arrow fly straight for a distance, then gravity takes over and screws that all up.
Is this another homework question?
Arrows do not fly as straight as you may think. While in flight they bend and flex and twist quite violently. Also the have a downward arc, due to gravitational pull.
I'm with Anonymous above - arrows don't fly straight - gravity gives it a downward drift the moment it leaves the bow.
If we are talking an arrow flying without the effects of gravity, and no friction caused by an atmosphere - then I would go with Zaux - Indians (in a space suit, in space - and don't get me started on the effects of cold or the minute gravitational effects that are still found in the most god-forsaken places in space, or space dust, or.....)
Aw heck - Arrows just don't fly straight and true...
Unless Kevin Costner / Robin Hood and Hollywood are involved??
ok...after those remarks...still the ideea of an arrow flying straight is having the tip havyer than the end of it,....so where the tip will be pointed , the body will follow...
I bet the question is about why the arrow points in the same direction as it's moving.
If so it's because the feathers have the greatest drag and so will stay at the rear.
It will be in a wide parabolic fall, which approximates to a straight line, because its speed is high.
I would to modify my earlier stupid comment about Indians ... the bow also contributes to the success of the arrows seemingly straight flight ... mmmmm ... darn pain meds ... heh heh.
If you ever watch Indians in movies and such, they always aim slightly downward, this keeps the gravitational pull from affection the shot so you can fire straight. The feathers also help with this.
Were these indians up on a high ledge?
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