👉 Pennyorth is a mathematical concept in physics that describes the motion of a point particle under the influence of an external gravitational field. It was introduced by Carl von Knapp in 1846 and is named after the German physicist Heinrich Wilhelm Penny, who first described it in 1829. The Pennorth is defined as the center of mass of a system consisting of two particles each with position vectors p1 = (x1, y1, z1) and p
