翻訳と辞書 Words near each other ・ Speckled day gecko ・ Speckled flounder ・ Speckled garden eel ・ Speckled Goats II ・ Specific Area Message Encoding ・ Specific Carbohydrate Diet ・ Specific detectivity ・ Specific developmental disorder ・ Specific devise ・ Specific dynamic action ・ Specific energy ・ Specific energy density ・ Specific epithet ・ Specific fan power ・ Specific finding ・ Specific force ・ Specific fuel consumption ・ Specific granule ・ Specific gravity ・ Specific Gravity (album) ・ Specific identification (inventories) ・ Specific impulse ・ Specific inhalation challenge ・ Specific interval ・ Specific ion interaction theory ・ Specific kinetic energy ・ Specific language impairment ・ Specific leaf area ・ Specific legacy ・ Specific mechanical energy Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Specific force ： ウィキペディア英語版 Specific force Specific force is defined as the non-gravitational force per unit mass. :$\backslash mbox\; =\; \backslash frac\}$ Specific force (also called g-force and mass-specific force) is measured in meters/second² (m·s−2) which is the units for acceleration. Thus, specific force is not actually a force, but a type of acceleration. However, the (mass-)specific force is not a coordinate-acceleration, but rather a proper acceleration, which is the acceleration relative to free-fall. Forces, specific forces, and proper accelerations are the same in all reference frames, but coordinate accelerations are frame-dependent. For free bodies, the specific force is the cause of, and a measure of, the body's proper acceleration. The g-force acceleration is the same as the specific force. The acceleration of an object free falling towards the earth depends on the reference frame (it disappears in the free-fall frame, also called the inertial frame), but any g-force "acceleration" will be present in all frames. This specific force is zero for freely-falling objects, since gravity acting alone does not produce g-forces or specific forces. Accelerometers on the surface of the Earth measure a constant 9.8 m/s^2 even when they are not accelerating (that is, when they do not undergo coordinate acceleration). This is because accelerometers measure the proper acceleration produced by the g-force exerted by the ground (gravity acting alone never produces g-force or specific force). Accelerometers measure specific force (proper acceleration), which is the acceleration relative to free-fall,〔http://www.strapdownassociates.com/Accels%20Measure.pdf〕 not the "standard" acceleration that is relative to a coordinate system. ==Hydraulics== In open channel hydraulics, specific force ($F\_s$) has a different meaning: :$F\_s\; =\; \backslash frac\; +\; zA$ where Q is the discharge, g is the acceleration due to gravity, A is the cross-sectional area of flow, and z is the depth of the centroid of flow area A.〔Chaudhry, M. Hanif "Open Channel Flow" 2nd Ed. (2008) pg.31 ISBN 978-0-387-30174-7〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Specific force」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.