The planet Jupiter is 7.78 ˛ 1011 m from the Sun. How long does it take for Jupiter to orbit once about the Sun? (The distance from the Earth to the Sun is 1.50 ˛ 1011 m.)

Newton's law of universal gravitation: Every particle in the universe attracts every other particle with a force that is proportional to the product of their masses and inversely proportional to the square of the distances between them. This force acts along the line joining the two particles.