RT @oken1215 : フィギュアスケートのジャンプにおける遠心力の算出。300rpm(1秒間に5回転の回転速度)と仮定。回転半径は実際の半径の1/√2。ということで7cmと仮定。このとき、体重45kgの選手が感じる遠心力は、45*0.07*(10π)^2÷9.8≒300kg!!!
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