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3-8 四连杆机构 OABO 1 在图示位置平衡，已知 OA=40 cm,O 1 B= 60cm, 作用在曲柄 OA 上的力偶矩大小为 m 1 =1Nm, 不计杆重；求

3-8 四连杆机构 OABO 1 在图示位置平衡，已知 OA=40 cm,O 1 B= 60cm, 作用在曲柄 OA 上的力偶矩大小为 m 1 =1Nm, 不计杆重；求 力偶矩 m 2 的大小及连杆 AB 所受的力。. B. A. 30 o. 90 o. m 1. O. m 2. O 1.

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3-8 四连杆机构 OABO 1 在图示位置平衡，已知 OA=40 cm,O 1 B= 60cm, 作用在曲柄 OA 上的力偶矩大小为 m 1 =1Nm, 不计杆重；求

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  1. 3-8四连杆机构OABO1在图示位置平衡，已知OA=40 cm,O1B= 60cm,作用在曲柄OA上的力偶矩大小为 m1=1Nm,不计杆重；求 力偶矩 m2的大小及连杆AB所受的力。 B A 30o 90o m1 O m2 O1

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