Question

Both earth and moon are subjected to the gravitational force of the sun. as observed from the sun, the orbit of the moon
A. will be elloptical
B. will not be strictly elliptical beause the total gravitational force on it is not centre
C. is not elliptical but will necessarily be a closed curve
D. deviates considerably from being elliptical due to influence of planets other than the earth

Answer 1

Correct Answer - B
As observed from the sun, two type of forces are acting on the moon one is due to gravitational attraction between the sun and the moon and the other is due to gravitational attraction between the earth and the moon. Hence, total force on the moon is not central