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[主观题]
已知直角弯杆OAB以匀角速度ω绕O轴转动,带动小环M沿OD杆运动,如图示。已知OA=l,取小环M为动点,OAB
杆为动系,当φ=60°时,M点牵连加速度的大小为()。
A.0.5lω2
B.lω2
C.
D.2lω2
查看答案
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.0.5lω2
B.lω2
C.
D.2lω2
A.K=4N·S
B.
C.
D.K=8N·S
A.
B.
C.ew
D.
A.1/3ml2ω
B.2/3ml2ω
C.ml2ω
D.4/3ml2ω
A.a=1,b=2
B.a=-l,b=2
C.a=1,b=0
D.a=-1,b=0
A.40
B.200
C.50
D.-200
A.向上
B.向下
C.为零
D.侧向