Lever - Lever
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A rod that can rotate around a fixed point (fulcrum). Also called a lever. When forces P and Q act perpendicular to the rod at distances a and b from the fulcrum, if Pa = Qb, the two forces are balanced (balance, scale, etc.). Using this, if a > b, a small force P can produce a large force Q (scissors, pliers, nail puller, can opener, etc.). It is widely used in machines and tools. → Related topics Work (physics) | Platform scales Source : Heibonsha Encyclopedia About MyPedia Information |
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一定点（支点）のまわりを回転できる棒。槓杆(こうかん)，レバーとも。支点から距離a，bのところで力P，Qが棒に直角に作用するとき，Pa＝Qbなら２力はつりあう（てんびん，さおばかりなど）。これを利用し，a＞bなら小さい力Pで大きい力Qが得られる（はさみ，ペンチ，くぎぬき，缶切りなど）。機械，工具の部分に広く利用される。 →関連項目仕事（物理）｜台ばかり（秤） 出典 株式会社平凡社百科事典マイペディアについて 情報 |
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