Notes of Chapter 06: Gravitation of “Physics XI” for FSc Part 1 published by Sindh Textbook Board, Jamshoro. These notes are very helpful to prepare Physics paper of FSc Part 1 for Sindh Board. These can also be consider as refrence notes for Federal Board, Multan Board, Faisalabad Board, Sargodha Board, Gujranwala Board, DG Khan Board, Rawalpindi Board or any other board of Pakistan.

For most situations gravity is well approximated by Newton's law of universal gravitation, which postulates that the gravitational force of two bodies of mass is directly proportional to the product of their masses and inversely proportional to the square of the distance between them …