Mathematics
Senior High
下線部、どうしてこうなるのでしょうか???
ツー 7
図より ヵー0.20m
1 40Xsin45*ニ =0.2072 m
=0.60 Xsin30'三0. 30m, =0m :
ッ メントの式「47=ニ7」 より, 反時
計回りを正として oi
=訪三30 X0.20 m 上
7 oe /
ニー12x1.41ニー16.92ミー17N・m
7王妃三40 X0.30三12N・m
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