一个球体在水中移动做功问题的辨析  

Differentiation and analysis of the work done by a sphere moving in the water

作　　者：石业娇[1] 

机构地区：[1]大连海洋大学应用技术学院,辽宁大连116300

出　　处：《辽宁师专学报（自然科学版）》2014年第3期21-23,37,共4页Journal of Liaoning Normal College(Natural Science Edition)

摘　　要：给出一个均匀质球体在水中垂直移动做功问题的完整解法.指出,在解决均匀球体在水中垂直移动做功问题时,计算浮力函数是关键所在.而浮力函数的计算,首先要建立在对浮力做功的正确认知与理解之上.只有对球体在水中移动时所受到的浮力做出正确的分析,才能在计算浮力函数时选择恰当的积分限,从而得出正确的结果.A though solution to the problem concerning the work done by a homogeneous sphere moving perpendicularly in the water is demonstrated. The vital procedure lies in the calculation of buoyant force function which should, first and foremost, be based on the correct cognition and understanding of the work from buoyant force. Only by analyzing correctly the buoyant force from the movement of a sphere in the water can the proper integral limit be chosen in calculating buoyant force function, hence a correct result.

关 键 词：球体 密度 浮力 做功 

分 类 号：O313[理学—一般力学与力学基础]