动能定理的表达式?
人气:487 ℃ 时间:2020-02-03 06:12:21
解答
W1+W2+W3+W4…=W总
ΔW=Ek2-Ek1 (k2) (k1)表示为下标
其中,Ek2表示物体的末动能,Ek1表示物体的初动能.△W是动能的变化,又称动能的增量,也表示合外力对物体做的总功.
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