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求助杠桿原理,懂的解釋下 |
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點評
夾角為0時壓力最小,只有當兩桿平行,而且與彈簧垂直時,夾角為0,此時壓力最小,支點距離也是28mm
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點評
如果桿平行,球越靠近彈簧,壓力越小,就像你用鋼絲鉗剪鋼絲一樣,鋼絲在開口處很難剪斷,需要放在根部剪才能剪斷
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