Encyclopædia Britannica, Ninth Edition/Gravitation

Sections
 * Attraction • Movement of a Falling Body • Values of g • Algebraical Formulæ • Motion of a Projectile
 * Centre of Gravity of a Plate • Centre of Gravity of a Rigid Body • Gravitation of a Rigid Body reduced to One Force
 * Law of Gravitation between Two Masses • Motion of a Planet round the Sun • On the Elliptic Motion of the Planets • The Hodograph • The Problem of Three Bodies • Calculation of Disturbed Motion • Determination of the Forces • Deductions from these Expressions • The Motion of the Moon • The Variation
 * Centre of Gravity of a Plate • Centre of Gravity of a Rigid Body • Gravitation of a Rigid Body reduced to One Force
 * Law of Gravitation between Two Masses • Motion of a Planet round the Sun • On the Elliptic Motion of the Planets • The Hodograph • The Problem of Three Bodies • Calculation of Disturbed Motion • Determination of the Forces • Deductions from these Expressions • The Motion of the Moon • The Variation
 * Law of Gravitation between Two Masses • Motion of a Planet round the Sun • On the Elliptic Motion of the Planets • The Hodograph • The Problem of Three Bodies • Calculation of Disturbed Motion • Determination of the Forces • Deductions from these Expressions • The Motion of the Moon • The Variation