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如图14所示,滑块A、B分别在相互垂直的滑槽中滑动,连杆AB的长度为l=20cm,在图示瞬时,=20cm/s,水平向左,连杆AB与水平线的夹角为,试求滑块B的速度和连杆AB的角速度。

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图14

问答题
2022-04-01 20:06
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正确答案

解:连杆AB作平面运动,因滑块A的速度是已知的,故选点A为基点,由基点法式滑块B的速度为

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上传图片2分)  上传图片的方向铅直向上。

B相对基点转动的速


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