here are three planets in circular orbits around a fixed

Last updated: 6/9/2023

here are three planets in circular orbits around a fixed star at distances a 4a and 9a espectively in same sense say anticlockise At time t 0 the star and the three planets are na straight line The period of revolution of the closest planet is T What minimum time fter t 0 will they again be in the same straight line A 8 T B 27 T C 108 T D 512 T