功
From Wikipedia, the free encyclopedia
From Wikipedia, the free encyclopedia
功可以用以下方程式顯示佢嘅變化(作功;work done):
其中, 表示功, 表示外力,而 表示同外力同方向嘅輕微位移。功嘅定義涉及到路徑積分,呢度 係積分嘅路徑。
為咗了解物體受力嘅作用,經過一段距離後所產生嘅效應,而定義出「功」呢個概念。
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