Question:
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
Solution:
The correct answer is (c) not be true because the major gravitational force on mercury is due to sun