Sunday, January 25, 2009
Nani Shitterun?!?
While browsing through Japan pictures from this summer to compile for my eventual scholarship presentation, I came across this picture. Taken at the largest nuclear power plant in Shikoku and one of the (if not the) largest nuclear power plants in Japan, it depicts another foreign exchange student, Nathan, openly breaking the rules like always as he walks along the line which they tell you not to cross for radiation safety (I think that's what that sign says). Whether he knew it or not (probably not), Nathan's stance helped to increase his moment of inertia. Equivalent to mass in linear terms, moment of inertia is the tendency for an object or person to resist angular acceleration, which in this case allows Nathan to stay standing while he walks along the narrow caution line and prevents forces such as gravity from causing him to rotate. By spreading his arms out, Nathan increases his weight distribution, or R in I=MR, and thus his moment of inertia increases. Additionally, by further distributing his weight he more effectively lowers his center of mass in relation to his support (his feet), allowing him to not fall and get radiation poisoning.
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