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若圆环的外径与圆盘的直径相等，质量相同，转动惯量相同吗？为什么？ 知乎 Template






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tomski若圆环的外径与圆盘的直径相等，质量相同，转动惯量相同吗？为什么？ 知乎 coloring
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一圆环其圆心为O若以它的直径AB为轴做匀速转动如下图所示1圆环上PQ两点的线速度大小之比是 2若圆环的半径是20cm绕AB sketch template
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如图所示半径为R的圆盘匀速转动在距半径高度h处以平行OB方水平抛出一小球抛出瞬间小球的初速度与OB方平行为使小球和圆盘只碰撞一次且 sketch template
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