As observed from earth, the sun appears to move in an approximately circular orbit. For the motion of another planet like mercury as observed from earth, this would a) be similarly true b) not be true because the force between earth and mercury is not inverse square law c) not be true because the major gravitational force on mercury is due to sun d) not be true because mercury is influenced by forces other than gravitational forces
Correct option is C) Force of attraction between any two objects obeys the inverse square law as its universal law. the relative motion between earth, mercury as observed from earth will not be circular as the force on mercury due to the sun is very large than due to earth and due to earth and due to the relative motion of Sun and earth with mercury.
