Mutual energy of relative motions

Wei-Hua Chieng*

*此作品的通信作者

研究成果: Conference contribution同行評審

摘要

A gun with it explosive energy can accelerate the bullet ball, with mass m, from zero velocity to velocity Δv. After the gun shoots a ball into the wall, the wall receives an energy of 1/2 m(Δv)2 which is converted from the explosive energy to the kinetic energy of the ball and then to heat and/or deformation energy of the wall. When a person carries the same gun on board of a high speed train in the speed V, the observer on the earth will see the kinetic energy change as 1/2m(V+Δv)2-1/2mV2 = 1/2m(Δv)2 + mVΔv when the gun on the train shoots the bullet ball. Where does the extra energy mVΔv come from? Is the gun powder explosive energy a frame-of-reference dependent quantity? Does it concern the theory of relativity by Albert Einstein? In this paper, the extra energy mVΔv is defined as the mutual energy of the relative motion which is a frame-of-reference dependent energy and may be transferred from one reference frame to the other.

原文English
主出版物標題2015 IFToMM World Congress Proceedings, IFToMM 2015
發行者National Taiwan University
ISBN(電子)9789860460988
DOIs
出版狀態Published - 2015
事件14th International Federation for the Promotion of Mechanism and Machine Science World Congress, IFToMM 2015 - Taipei, Taiwan
持續時間: 25 10月 201530 10月 2015

出版系列

名字2015 IFToMM World Congress Proceedings, IFToMM 2015

Conference

Conference14th International Federation for the Promotion of Mechanism and Machine Science World Congress, IFToMM 2015
國家/地區Taiwan
城市Taipei
期間25/10/1530/10/15

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