如图所示,质量为2kg的物体在竖直平面h=1m的光滑弧形轨道A点,以初速度v0=4m/s沿轨道下滑.并进入水平轨道BC.BC=1.8m,物体在BC段受到的阻力为8N(g=10m/s2)求:(1)物体下滑到B点的速度.(2)物体
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![如图所示,质量为2kg的物体在竖直平面h=1m的光滑弧形轨道A点,以初速度v0=4m/s沿轨道下滑.并进入水平轨道BC.BC=1.8m,物体在BC段受到的阻力为8N(g=10m/s2)求:(1)物体下滑到B点的速度.(2)物体](/uploads/image/z/13231766-38-6.jpg?t=%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%93%E5%9C%A8%E7%AB%96%E7%9B%B4%E5%B9%B3%E9%9D%A2h%3D1m%E7%9A%84%E5%85%89%E6%BB%91%E5%BC%A7%E5%BD%A2%E8%BD%A8%E9%81%93A%E7%82%B9%2C%E4%BB%A5%E5%88%9D%E9%80%9F%E5%BA%A6v0%3D4m%2Fs%E6%B2%BF%E8%BD%A8%E9%81%93%E4%B8%8B%E6%BB%91.%E5%B9%B6%E8%BF%9B%E5%85%A5%E6%B0%B4%E5%B9%B3%E8%BD%A8%E9%81%93BC.BC%3D1.8m%2C%E7%89%A9%E4%BD%93%E5%9C%A8BC%E6%AE%B5%E5%8F%97%E5%88%B0%E7%9A%84%E9%98%BB%E5%8A%9B%E4%B8%BA8N%EF%BC%88g%3D10m%2Fs2%EF%BC%89%E6%B1%82%EF%BC%9A%EF%BC%881%EF%BC%89%E7%89%A9%E4%BD%93%E4%B8%8B%E6%BB%91%E5%88%B0B%E7%82%B9%E7%9A%84%E9%80%9F%E5%BA%A6.%EF%BC%882%EF%BC%89%E7%89%A9%E4%BD%93)
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