>>2 >乾電池が50g弱と考えて約135g(Ipodの30GBモデルと同じ位)ですか。 ストラップの耐荷重を仮に50kgfとすると、 F=maの運動方程式より370G 投球動作中のボールに与える加速時間を仮にプロ野球選手並の早さ(0.03sec)とすると、 約111m/sec つまり、400km/hで投げればいけるんじゃね?
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Reader Comments (Page 1 of 1)
Tim @ Nov 22nd 2006 9:17AM
>>2
>乾電池が50g弱と考えて約135g(Ipodの30GBモデルと同じ位)ですか。
ストラップの耐荷重を仮に50kgfとすると、
F=maの運動方程式より370G
投球動作中のボールに与える加速時間を仮にプロ野球選手並の早さ(0.03sec)とすると、
約111m/sec
つまり、400km/hで投げればいけるんじゃね?