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【毎日一問】理論基礎 2020.03.21

2020-03-22View Original

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選択問題:厚さがtの鋼板にプレス機を使って円形の穴を開ける場合、必要な打力の大きさは()。 (A)円孔の直径の二乗に比例する (B)円孔の直径の平方根に比例する (C)円孔の直径に比例する (D)円孔の直径の三次方に比例する 答え:C ヒント:解き方を説明できた人には特別報酬をご用意しています。答えは返信で確認できます!
Reply #22020-03-22
(C)円孔の直径に比例する
Reply #32020-03-23
C 推力F=τA=τπdtは、円孔の直径に比例する。
Reply #42020-03-23
(C)円孔の直径に比例する
Reply #52020-03-23
(A)円孔の直径の二乗に比例する

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