在研究�动�擦的实验中用弹簧测力计拉着木块在长木板上做匀速直线运动1这时弹簧测力计所示的拉力为 N木块受到�擦力为 N.2如果在 Template




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tomski在研究�动�擦的实验中用弹簧测力计拉着木块在长木板上做匀速直线运动1这时弹簧测力计所示的拉力为 n木块受到�擦力为 n.2如果在 coloring