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new new new new (id: b97b7b452)

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admin 发表于 2024-10-30 17:00:14 | 显示全部楼层 |阅读模式
本题目来源于试卷: new new new new,类别为 IB物理学

[问答题]
A plumb bob (a mass m ha6sbo qa:z+nu t-k:0hx nging on a string) is defleclkzm789i;z h/wk1k,)q,bht o-g vs qated from the vertical by an a) zz8 tvs/w,b9h7q,mk ao kkhqgl-i1;ngle $\theta$ due to a massive mountain nearby (Fig. 5-44). (a) Find an approximate formula for $\theta$ in terms of the mass of the mountain, $m_{\mathrm{M}}$ , the distance to its center, $D_{\mathrm{M}}$ , and the radius and mass of the Earth. (b) Make a rough estimate of the mass of Mt. Everest, assuming it has the shape of a cone 4000 m high and base of diameter 4000 m . Assume its mass per unit volume is 3000 kg per $ \mathrm{m}^{3}$ . (c) Estimate the angle $\theta$ of the plumb bob if it is 5 km from the center of Mt . Everest.





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