a、b两球固定在一轻杆两端,两球球心相距1m,两球质量分别为ma=4kg,mb=1kg,杆上O处为一水平轴,距a球球心0.4m,可以保持杆在竖直平面内无摩擦转动,现保持杆水平静止,然后无初速度释放,当两球转到
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![a、b两球固定在一轻杆两端,两球球心相距1m,两球质量分别为ma=4kg,mb=1kg,杆上O处为一水平轴,距a球球心0.4m,可以保持杆在竖直平面内无摩擦转动,现保持杆水平静止,然后无初速度释放,当两球转到](/uploads/image/z/2388068-44-8.jpg?t=a%E3%80%81b%E4%B8%A4%E7%90%83%E5%9B%BA%E5%AE%9A%E5%9C%A8%E4%B8%80%E8%BD%BB%E6%9D%86%E4%B8%A4%E7%AB%AF%2C%E4%B8%A4%E7%90%83%E7%90%83%E5%BF%83%E7%9B%B8%E8%B7%9D1m%2C%E4%B8%A4%E7%90%83%E8%B4%A8%E9%87%8F%E5%88%86%E5%88%AB%E4%B8%BAma%3D4kg%2Cmb%3D1kg%2C%E6%9D%86%E4%B8%8AO%E5%A4%84%E4%B8%BA%E4%B8%80%E6%B0%B4%E5%B9%B3%E8%BD%B4%2C%E8%B7%9Da%E7%90%83%E7%90%83%E5%BF%830.4m%2C%E5%8F%AF%E4%BB%A5%E4%BF%9D%E6%8C%81%E6%9D%86%E5%9C%A8%E7%AB%96%E7%9B%B4%E5%B9%B3%E9%9D%A2%E5%86%85%E6%97%A0%E6%91%A9%E6%93%A6%E8%BD%AC%E5%8A%A8%2C%E7%8E%B0%E4%BF%9D%E6%8C%81%E6%9D%86%E6%B0%B4%E5%B9%B3%E9%9D%99%E6%AD%A2%2C%E7%84%B6%E5%90%8E%E6%97%A0%E5%88%9D%E9%80%9F%E5%BA%A6%E9%87%8A%E6%94%BE%2C%E5%BD%93%E4%B8%A4%E7%90%83%E8%BD%AC%E5%88%B0)
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