How much work does it take to stop the Earth rotating?——Talking about “wandering Earth”
Received date: 2019-05-02
Revised date: 2019-08-04
Online published: 2020-04-20
Starting from a grand plan of a domestic sci-fi blockbuster “The Wandering Earth”，the minimum mechanical work needed to stop the Earth rotating is deduced and calculated by using the law of conservation of momentum moment，the theorem of kinetic energy and the concept of the first cosmic velocity. The result is about 4.1×1030 J.The problem of feasibility of stopping the Earth rotating is discussed from the viewpoint of energy.
YU Feng-jun, JIA Shuan-wen, TIAN Jun-long, TANG Zhen-jie . How much work does it take to stop the Earth rotating?——Talking about “wandering Earth”[J]. College Physics, 2020 , 39(04) : 10 -12 . DOI: 10.16854 / j.cnki.1000-0712.190191
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