如图所示,质量分别为2m和3m的两个小球固定在一根直角尺的两端A,B,直角尺的定点为O.AO,BO分别长2L,L.1)当A达到最低点时,A小球的速度大小v?(2)B求能上升的最大高度h?(1)由Ek=-Ep得2mg*2L-3mg*L=1/2*2mv
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![如图所示,质量分别为2m和3m的两个小球固定在一根直角尺的两端A,B,直角尺的定点为O.AO,BO分别长2L,L.1)当A达到最低点时,A小球的速度大小v?(2)B求能上升的最大高度h?(1)由Ek=-Ep得2mg*2L-3mg*L=1/2*2mv](/uploads/image/z/10099727-71-7.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E8%B4%A8%E9%87%8F%E5%88%86%E5%88%AB%E4%B8%BA2m%E5%92%8C3m%E7%9A%84%E4%B8%A4%E4%B8%AA%E5%B0%8F%E7%90%83%E5%9B%BA%E5%AE%9A%E5%9C%A8%E4%B8%80%E6%A0%B9%E7%9B%B4%E8%A7%92%E5%B0%BA%E7%9A%84%E4%B8%A4%E7%AB%AFA%2CB%2C%E7%9B%B4%E8%A7%92%E5%B0%BA%E7%9A%84%E5%AE%9A%E7%82%B9%E4%B8%BAO.AO%2CBO%E5%88%86%E5%88%AB%E9%95%BF2L%2CL.1%29%E5%BD%93A%E8%BE%BE%E5%88%B0%E6%9C%80%E4%BD%8E%E7%82%B9%E6%97%B6%2CA%E5%B0%8F%E7%90%83%E7%9A%84%E9%80%9F%E5%BA%A6%E5%A4%A7%E5%B0%8Fv%3F%282%29B%E6%B1%82%E8%83%BD%E4%B8%8A%E5%8D%87%E7%9A%84%E6%9C%80%E5%A4%A7%E9%AB%98%E5%BA%A6h%3F%EF%BC%881%EF%BC%89%E7%94%B1Ek%3D-Ep%E5%BE%972mg%2A2L-3mg%2AL%3D1%2F2%2A2mv)
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