一倾角为45°的斜面固定于竖直墙上,为使一光滑的铁球静止,需加一水平力F,且F过球心,下列说法正确的是 一倾角为45°的斜面固定于竖直墙上,为使一光滑的铁球静止,需加一水平力F,且F过
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![一倾角为45°的斜面固定于竖直墙上,为使一光滑的铁球静止,需加一水平力F,且F过球心,下列说法正确的是 一倾角为45°的斜面固定于竖直墙上,为使一光滑的铁球静止,需加一水平力F,且F过](/uploads/image/z/4747407-15-7.jpg?t=%E4%B8%80%E5%80%BE%E8%A7%92%E4%B8%BA45%C2%B0%E7%9A%84%E6%96%9C%E9%9D%A2%E5%9B%BA%E5%AE%9A%E4%BA%8E%E7%AB%96%E7%9B%B4%E5%A2%99%E4%B8%8A%2C%E4%B8%BA%E4%BD%BF%E4%B8%80%E5%85%89%E6%BB%91%E7%9A%84%E9%93%81%E7%90%83%E9%9D%99%E6%AD%A2%2C%E9%9C%80%E5%8A%A0%E4%B8%80%E6%B0%B4%E5%B9%B3%E5%8A%9BF%2C%E4%B8%94F%E8%BF%87%E7%90%83%E5%BF%83%2C%E4%B8%8B%E5%88%97%E8%AF%B4%E6%B3%95%E6%AD%A3%E7%A1%AE%E7%9A%84%E6%98%AF+%E4%B8%80%E5%80%BE%E8%A7%92%E4%B8%BA45%C2%B0%E7%9A%84%E6%96%9C%E9%9D%A2%E5%9B%BA%E5%AE%9A%E4%BA%8E%E7%AB%96%E7%9B%B4%E5%A2%99%E4%B8%8A%EF%BC%8C%E4%B8%BA%E4%BD%BF%E4%B8%80%E5%85%89%E6%BB%91%E7%9A%84%E9%93%81%E7%90%83%E9%9D%99%E6%AD%A2%EF%BC%8C%E9%9C%80%E5%8A%A0%E4%B8%80%E6%B0%B4%E5%B9%B3%E5%8A%9BF%EF%BC%8C%E4%B8%94F%E8%BF%87)
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