Completar frases Universal Gravitation Law Fill in the BlanksVersión en línea Test your knowledge of the universal gravitation law by filling in the missing words in this physics-themed game. por Romina Tanzi 1 Isaac Newton fundamental proportional square particle attracts masses physics inversely distance centers force principles particle The universal law of gravitation states that every in the universe every other with a that is directly to the product of their and proportional to the of the between their . This law was formulated by Sir in 1687 and is one of the of .