Brief introduction to gravitational force: A Recommendation For Class Nine

This book gives a brief description about the force of gravitation.It gives a detailed description of all the ideas and laws related to the force of gravitation.some information about acceleration due to gravity is also given. it mentions all the important formulas related to the topic.Moreover unlike other e-books it also has some numerical problems for the readers.the basic concepts of class 9 are given and thus it is a recommendation for class nine.hope you enjoy reading it.