The fourth volume of Interactive Physics coves the remaining portions of Mechanics – work power and energy. This volume incorporates Concepts Application Methods and Misconceptions with solutions in worked out examples on the basis of application methods. The objective is to ensure that the students lean how to solve problems based on the application methods. This book teaches how to use the concepts and application methods to solve examples.This book is meant for students and users who want to improve their understanding of physics. Students can use this book can be used of IIT JEE JIPMER NEET AIIMS and other exam preparation.