重80N的物体在拉力F的作用下,以0.4m/s的速度在水平面上做匀速直线运动,弹簧测力计的示数为10N,不计轴间摩擦,求拉力F
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![重80N的物体在拉力F的作用下,以0.4m/s的速度在水平面上做匀速直线运动,弹簧测力计的示数为10N,不计轴间摩擦,求拉力F](/uploads/image/z/3567883-67-3.jpg?t=%E9%87%8D80N%E7%9A%84%E7%89%A9%E4%BD%93%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%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%BA10N%2C%E4%B8%8D%E8%AE%A1%E8%BD%B4%E9%97%B4%E6%91%A9%E6%93%A6%2C%E6%B1%82%E6%8B%89%E5%8A%9BF)
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