G being Newton’s Universal Gravitational Constant, although a number was only put to this many years after Newton’s time.<\/p>\n\n\n\n
Cavendish experiment<\/strong>, measurement of the force<\/a> of gravitational attraction between pairs of lead spheres, which allows the calculation of the value of the gravitational constant<\/a>, G<\/em>. In Newton\u2019s law of universal gravitation<\/a>, the attractive force between two objects (F<\/em>) is equal to G<\/em> times the product of their masses (m<\/em>1<\/sub>m<\/em>2<\/sub>) divided by the square of the distance between them (r<\/em>2<\/sup>); that is, F<\/em> = Gm<\/em>1<\/sub>m<\/em>2<\/sub>\/r<\/em>2<\/sup>. The experiment was performed in 1797\u201398 by the English scientist Henry Cavendish<\/a>. He followed a method prescribed, and used an apparatus built, by his countryman the geologist and astronomer John Michell<\/a>, who had died in 1793.<\/p>\n\n\n\n https:\/\/www.britannica.com\/science\/Cavendish-experiment<\/a><\/p>\n\n\n\n