近年来,万有引力定律在高考中体现出题目新颖,难度加大的趋势,综合典型考点来分析.一、求解天体密度例1(2014年新课标卷Ⅱ)假设地球可视为质量均匀分布的球体.已知地球表面重力加速度在两极的大小为g0,在赤道的大小为g;地球自转的周期为T,引力常量为G.地球的密度为() In recent years, the law of universal gravitation in the college entrance examination reflects a new topic, the trend of increasing difficulty, comprehensive analysis of typical test sites.First, the solution of celestial body density (2014 New Curriculum) Ⅱ assumes that the Earth can be seen as uniform mass distribution It is known that the gravitational acceleration on the Earth’s surface is g0 at the poles and g at the equator; the period of Earth’s rotation is T and the gravitational constant is G. The density of the Earth is ()