单词	moment of a force
释义	moment of a force A measure of the turning effect produced by a force about an axis. The magnitude of the moment is the product of the force and the perpendicular distance from the axis to the line of action of the force. An object will be in rotational equilibrium if the algebraic sum of all the moments of the forces on it about any axis is zero. See illustration. Moment of a force. For equilibrium mgb + F2 (b + c) = F1a, where mg is the weight of the beam acting through its centre of mass
随便看	zino zodiac zodiacal light zone refining zoom lens zwitterion coherent units coinage metals coincidence circuit cold emission cold fusion Coleman-Gross theorem collective excitation collective oscillation collector colliding-beam experiments colligative properties collimator collision density colloids cologarithm colorimeter colour colour charge colour photography

物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。