Here, students learn Newton's

law of gravitation and use this to study motion on an inclined plane, projectile motion and planetary (orbital) motion.

The final measurement in this group of related experiments was a test of the inverse-square

law of gravitation on the scale of meters to kilometers.

From the time of Newton, who discovered the universal

law of gravitation of two bodies, an unrestricted solution for any number of bodies has been sought.

In a letter dated 7 November 1780, Lord Kames expresses concern that Reid's distrust of hypotheses, his insistence that the universal

law of gravitation does not disclose the causes behind the law, "damps the Spirit of Inquiry" (p.

He had proposed that religion be "alive and warm, part of human life, and of the landscape, and of the cheerful day," (29) and foretold a teacher who would see "the identity of the

law of gravitation with purity of heart." (30) He never changed those demands, and never developed principles that let him accommodate divine law and evil, spirit and the machine, the infinite and the concrete, except by pronouncing them all incomprehensibly the same.

As example the well-known story of Newton's (Albertyn, 1955: 1764-1765) formulation of the Universal

Law of Gravitation is used: One day Newton was sitting dreaming under a tree.

The finding demonstrated that the pairs of stars move in accordance with Newton's

law of gravitation, "extending [the law] farther into space than ever before," notes DeVorkin.

After a steep climb that gives passengers a rush of acceleration equal to 1.8 times gravity, the plane begins to crest in its arc of travel, and the

law of gravitation seems for a startling moment to be suspended.

He said he discovered the universal

law of gravitation by thinking about it.

And, as an undergraduate, I was told about Newton's religiosity (by one of my more renegade physics teachers)--but again, so what for the inverse square

law of gravitation and for celestial mechanics?, if not for the Principia Mathematica of 1687.

After the formulation of the

law of gravitation, a few conservative biblical commentators sought to explain "chains" and "cords" in the Job 38:31 passage, "Can you bind the chains of the Pleiades, or loose the cords of Orion?" as reflecting biblical knowledge of gravitational bonds.

Newton's

law of gravitation is still valid in all contexts except those in which the objects are travelling at or near the speed of light.

The formula we can use to determine the mass is derived from Isaac Newton's

law of gravitation:

The whole story is usually regarded as the greatest victory that Newton's

law of gravitation was to achieve, for a tiny apparent deviation from that law was enough to lead to the discovery of a giant planet.

For example, Newton's

law of gravitation has already been given this form and the equations of general relativity theory and of fluid dynamics can, in principle, be expressed in this way.