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在一些高考复习资料上常常出现下面一道实验题 .原题 已知地球半径为 R,某座山的山脚海拔为零 ,山顶海拔约 2 km.甲、乙两登山运动员在没有测量工具的情况下 ,只利用随身携带的一根长约 2 m(不可伸长 )的细线及一块小石子就成功地测定了这座山的高度 h.请问他们是怎么做的 ?写
The following experimental questions often appear on some college entrance examination review materials. The original title is known to have an Earth radius of R. The foot of a mountain is at an elevation of zero, and the top of the mountain is about 2 km above sea level. The two mountaineers A and B have no measurement tools. The height of the mountain was successfully determined using only a thin wire of about 2 m (not extensible) and a small stone that was carried around. How did they do it?