如图所示一只圆盘绕竖直轴匀速转动木块随着圆盘一起运动那么木块受到圆盘对它的�擦力方�是 A.背离圆盘中心b.指�圆盘中心c.与木块的 Template




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tomski如图所示一只圆盘绕竖直轴匀速转动木块随着圆盘一起运动那么木块受到圆盘对它的�擦力方�是 a.背离圆盘中心b.指�圆盘中心c.与木块的 coloring