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Gaokao Physics Practice Question

3. (6 分) 物块在轻绳的拉动下沿倾角为 $30^{\circ}$ 的固定斜面向上匀速运动, 轻绳与斜面平行。 已知物块与斜面之间的动摩擦因数为 $\frac{\sqrt{3}}{3}$, 重力加速度取 $10 \mathrm{~m} / \mathrm{s}^{2}$. 若轻绳能承受的最大张 力为 $1500 \mathrm{~N}$ ，则物块的质量最大为 $(\quad)$

  1. A.$150 \mathrm{~kg}$
  2. B.$100 \sqrt{3} \mathrm{~kg}$
  3. C.$200 \mathrm{~kg}$
  4. D.$200 \sqrt{3} \mathrm{~kg}$

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