天国使者7 发表于 2013-12-17 11:34 ! E8 H# z; A d' f. @6 D
真行啊,不过最值如何求呢? 8 S, S4 O" M9 i7 a2 D$ Z0 d
大侠,帮我看下,$ i: b" ^0 C5 m2 v$ W1 ]9 d: H
此时,曲柄成67.26°时,是否出力最大?9 ~' d6 a9 ]4 E7 i g% t% d
[img=0,1]file:///C:\Documents and Settings\Administrator\Application Data\Tencent\Users\540582613\QQ\WinTemp\RichOle\S%06DTI{PKX%NZP)%BN2[_6.jpg[/img][img=0,1]file:///C:\Documents and Settings\Administrator\Application Data\Tencent\Users\540582613\QQ\WinTemp\RichOle\S%06DTI{PKX%NZP)%BN2[_6.jpg[/img]4 v9 A6 L3 K+ A0 ~ R# e
( O) E5 f U& Z9 k0 o8 J此时,曲柄成15.65°时,出力最小?
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