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Physics-Current Event #2

Physics-Current Event #2 - “proportional to the number of...

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Physics 4 December, 2009 Nanoscale Friction In Physics World, I read an article called “Nanoscale Friction: thinking big helps.” This article was about how friction affects objects of all sizes. Objects that are smaller however, are affected by friction and negatively impacted because of their high surface-to-volume ratio. Because of this ratio, small objects slide on surfaces or stick together. Similar to what we have learned and experimented with in class, scientists had to repeat their experiments numerous times in order to find out where friction is applied on very small objects. After an abundant amount of testing, the scientists found that the sliding friction has “shown quantitative agreement with experiments carried out on the same material systems” (Dumé). Their discovery overall found that the force of friction for nanoscale objects, is
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Unformatted text preview: “proportional to the number of atoms that interact between the two surfaces” (Dumé). Like we have learned in class with our Static and Kinetic Forces Lab, there are many different variables that must be applied and calculated to determine all of the forces that are acting on an object. There are numerous different types of forces that cause an object to move in certain ways. With the research done by scientist Izabela Szlufarska, she can now focus on the ultimate goal of producing quantitative theories. This will allow for predicting the coefficient of friction for several materials. Work Cited Dumé, Belle. "Nanoscale friction: thinking big helps." Physics World . Institute of Physics, 26 Feb. 2009. Web. 2 Dec. 2009. < http://physicsworld.com/cws/article/news/38021> ;....
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Physics-Current Event #2 - “proportional to the number of...

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