Both The Earth And The Moon Are Subject To The Gravitational Force Of The Sun
Both the earth and the moon are subject to the gravitational force of the sun. As observed … not elliptical but will necessarily be…
(b) Moon revolves around the earth in a nearly circular orbit. When it is observed from the sun, two types 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. So moon is moving under the combined gravitational pull acting on it due to the earth and the sun. Hence, total force on the moon is not central.