拉力对物体做功 拉力做的功 物体做的功 有什么区别?怎么算的?(滑轮)如图所示,质量为2Kg的物体A在拉力F的作用下,以0.4m/s的速度在水平桌面上做匀速直线运动,弹簧测力计的示数为6N,不计较
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![拉力对物体做功 拉力做的功 物体做的功 有什么区别?怎么算的?(滑轮)如图所示,质量为2Kg的物体A在拉力F的作用下,以0.4m/s的速度在水平桌面上做匀速直线运动,弹簧测力计的示数为6N,不计较](/uploads/image/z/2176006-22-6.jpg?t=%E6%8B%89%E5%8A%9B%E5%AF%B9%E7%89%A9%E4%BD%93%E5%81%9A%E5%8A%9F+%E6%8B%89%E5%8A%9B%E5%81%9A%E7%9A%84%E5%8A%9F+%E7%89%A9%E4%BD%93%E5%81%9A%E7%9A%84%E5%8A%9F+%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB%3F%E6%80%8E%E4%B9%88%E7%AE%97%E7%9A%84%3F%EF%BC%88%E6%BB%91%E8%BD%AE%EF%BC%89%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E8%B4%A8%E9%87%8F%E4%B8%BA2Kg%E7%9A%84%E7%89%A9%E4%BD%93A%E5%9C%A8%E6%8B%89%E5%8A%9BF%E7%9A%84%E4%BD%9C%E7%94%A8%E4%B8%8B%2C%E4%BB%A50.4m%2Fs%E7%9A%84%E9%80%9F%E5%BA%A6%E5%9C%A8%E6%B0%B4%E5%B9%B3%E6%A1%8C%E9%9D%A2%E4%B8%8A%E5%81%9A%E5%8C%80%E9%80%9F%E7%9B%B4%E7%BA%BF%E8%BF%90%E5%8A%A8%2C%E5%BC%B9%E7%B0%A7%E6%B5%8B%E5%8A%9B%E8%AE%A1%E7%9A%84%E7%A4%BA%E6%95%B0%E4%B8%BA6N%2C%E4%B8%8D%E8%AE%A1%E8%BE%83)
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