如图,直角架ABC的直角边AB在竖直方向上,B点和C点各系一细绳,两绳共吊一质量为1KG的小球于D点,BD垂直于CD,角ABD为三十度,BD=40cm,当直角架以AB为轴以10rad每秒的角速度匀速转动时,绳BD和CD的拉力
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![如图,直角架ABC的直角边AB在竖直方向上,B点和C点各系一细绳,两绳共吊一质量为1KG的小球于D点,BD垂直于CD,角ABD为三十度,BD=40cm,当直角架以AB为轴以10rad每秒的角速度匀速转动时,绳BD和CD的拉力](/uploads/image/z/3827412-36-2.jpg?t=%E5%A6%82%E5%9B%BE%2C%E7%9B%B4%E8%A7%92%E6%9E%B6ABC%E7%9A%84%E7%9B%B4%E8%A7%92%E8%BE%B9AB%E5%9C%A8%E7%AB%96%E7%9B%B4%E6%96%B9%E5%90%91%E4%B8%8A%2CB%E7%82%B9%E5%92%8CC%E7%82%B9%E5%90%84%E7%B3%BB%E4%B8%80%E7%BB%86%E7%BB%B3%2C%E4%B8%A4%E7%BB%B3%E5%85%B1%E5%90%8A%E4%B8%80%E8%B4%A8%E9%87%8F%E4%B8%BA1KG%E7%9A%84%E5%B0%8F%E7%90%83%E4%BA%8ED%E7%82%B9%2CBD%E5%9E%82%E7%9B%B4%E4%BA%8ECD%2C%E8%A7%92ABD%E4%B8%BA%E4%B8%89%E5%8D%81%E5%BA%A6%2CBD%3D40cm%2C%E5%BD%93%E7%9B%B4%E8%A7%92%E6%9E%B6%E4%BB%A5AB%E4%B8%BA%E8%BD%B4%E4%BB%A510rad%E6%AF%8F%E7%A7%92%E7%9A%84%E8%A7%92%E9%80%9F%E5%BA%A6%E5%8C%80%E9%80%9F%E8%BD%AC%E5%8A%A8%E6%97%B6%2C%E7%BB%B3BD%E5%92%8CCD%E7%9A%84%E6%8B%89%E5%8A%9B)
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