本人愚笨,如图所示,一夹子夹住木块,在为F作用下处于悬空静止,夹子与木块两侧的摩擦力均为f,且夹子对木块的压力保持不变,则下列说法中正确的是 A、夹子受到四个力的作用 B、木块受
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![本人愚笨,如图所示,一夹子夹住木块,在为F作用下处于悬空静止,夹子与木块两侧的摩擦力均为f,且夹子对木块的压力保持不变,则下列说法中正确的是 A、夹子受到四个力的作用 B、木块受](/uploads/image/z/12843935-71-5.jpg?t=%E6%9C%AC%E4%BA%BA%E6%84%9A%E7%AC%A8%2C%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E4%B8%80%E5%A4%B9%E5%AD%90%E5%A4%B9%E4%BD%8F%E6%9C%A8%E5%9D%97%2C%E5%9C%A8%E4%B8%BAF%E4%BD%9C%E7%94%A8%E4%B8%8B%E5%A4%84%E4%BA%8E%E6%82%AC%E7%A9%BA%E9%9D%99%E6%AD%A2%2C%E5%A4%B9%E5%AD%90%E4%B8%8E%E6%9C%A8%E5%9D%97%E4%B8%A4%E4%BE%A7%E7%9A%84%E6%91%A9%E6%93%A6%E5%8A%9B%E5%9D%87%E4%B8%BAf%2C%E4%B8%94%E5%A4%B9%E5%AD%90%E5%AF%B9%E6%9C%A8%E5%9D%97%E7%9A%84%E5%8E%8B%E5%8A%9B%E4%BF%9D%E6%8C%81%E4%B8%8D%E5%8F%98%2C%E5%88%99%E4%B8%8B%E5%88%97%E8%AF%B4%E6%B3%95%E4%B8%AD%E6%AD%A3%E7%A1%AE%E7%9A%84%E6%98%AF+A%E3%80%81%E5%A4%B9%E5%AD%90%E5%8F%97%E5%88%B0%E5%9B%9B%E4%B8%AA%E5%8A%9B%E7%9A%84%E4%BD%9C%E7%94%A8+++++++B%E3%80%81%E6%9C%A8%E5%9D%97%E5%8F%97)
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