图呢……
算了帮你翻译一下
一个倾角为20度的斜面上有一个2kg的箱子（视作质点）,该箱被一轻绳拉着,绳上张力为18N.箱子与斜面间的动摩擦因数为0.6
（1）斜面对箱子的正压力
（2）箱子的加速度
应该不难做,你不给图我怎么知道绳子怎么拉的……
麻烦帮解一道英文版物理题A box of mass 2kg is pulled up a rough plane fac
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