物体作圆锥摆运动时( )A物体受到重力、绳子拉力和向心力的作用B物体是作匀速圆周运动的,所受合外力不变C所受合力指向绳子的悬点D重力和绳子拉力的合力供给向心力
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![物体作圆锥摆运动时( )A物体受到重力、绳子拉力和向心力的作用B物体是作匀速圆周运动的,所受合外力不变C所受合力指向绳子的悬点D重力和绳子拉力的合力供给向心力](/uploads/image/z/8936301-21-1.jpg?t=%E7%89%A9%E4%BD%93%E4%BD%9C%E5%9C%86%E9%94%A5%E6%91%86%E8%BF%90%E5%8A%A8%E6%97%B6%EF%BC%88+%EF%BC%89A%E7%89%A9%E4%BD%93%E5%8F%97%E5%88%B0%E9%87%8D%E5%8A%9B%E3%80%81%E7%BB%B3%E5%AD%90%E6%8B%89%E5%8A%9B%E5%92%8C%E5%90%91%E5%BF%83%E5%8A%9B%E7%9A%84%E4%BD%9C%E7%94%A8B%E7%89%A9%E4%BD%93%E6%98%AF%E4%BD%9C%E5%8C%80%E9%80%9F%E5%9C%86%E5%91%A8%E8%BF%90%E5%8A%A8%E7%9A%84%2C%E6%89%80%E5%8F%97%E5%90%88%E5%A4%96%E5%8A%9B%E4%B8%8D%E5%8F%98C%E6%89%80%E5%8F%97%E5%90%88%E5%8A%9B%E6%8C%87%E5%90%91%E7%BB%B3%E5%AD%90%E7%9A%84%E6%82%AC%E7%82%B9D%E9%87%8D%E5%8A%9B%E5%92%8C%E7%BB%B3%E5%AD%90%E6%8B%89%E5%8A%9B%E7%9A%84%E5%90%88%E5%8A%9B%E4%BE%9B%E7%BB%99%E5%90%91%E5%BF%83%E5%8A%9B)
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