如图所示物体静止在斜面上重力g沿平行于斜面和垂直于斜面方�分解为f1和f2则 A.f1与作用在物体上的静�擦力相平衡b.f2就是物体 Template




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tomski如图所示物体静止在斜面上重力g沿平行于斜面和垂直于斜面方�分解为f1和f2则 a.f1与作用在物体上的静�擦力相平衡b.f2就是物体 coloring