|MadSci Network: Physics|
Newton's law that "every action has an exact and opposite reaction" is what is causing the trailers you observe to swerve. Why some swerve and others not depends upon a number of factors, first and foremost the dirver's training and ability. Secondly the condition of his equipment and tires, on both the pulling and pulled. Are the tires alligned? Are they balanced properly, How is the axle system on the trailer? Are the free axles straight? Any number of things could cause this fash-tailing, but first and foremost in my mind would be driver experience or lack thereof. Hope this helps in some small way. Donald E Duggan
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