What you’ll learn2 learning objectivesChoose one objective for a focused lesson, or study the complete topic.13.1.1A gravitational field is an example of a field of force and define• understand that a gravitational field is an example of a field of force and define gravitational field as force per unit massSyllabus objective13.1.2A gravitational field by means of field lines• represent a gravitational field by means of field linesSyllabus objective