This book is intended chiefly as a text for introductory course in mechanics for undergraduate students of physics. It is designed to provide a basic sketch of some fundamental concepts of mechanics, which forms one of the most fascinating branch of physics. The book explains critically the basic laws of mechanics and the methods to apply them to a wide range of complex problems. The material of the text, which developed out of a course given to the first year undergraduates in physics for the last thirty years, is self-contained. Keeping the level of the readers for whom, the text is written the mathematical structure has been kept as simple as possible. The basic objective of the text is to lay stress on the physical insight and the important methods of reasoning. To deepen understanding and to develop problem solving skills and self-confidence in facing new situations, a large numbers of solved examples are given in each chapter.