The fully revised 17th edition of Mechanics Volume-2 of Understanding Physics Series covers the foundations of Mechanics in an effective and easily comprehensible manner. Starting with a brief review of the basic review of the basic of Rotational Motion and Gravitation, the book takes up the in-depth discussion of the SHM, Elasticity and Fluid Mechanics. The book has been divided into six chapters Centre of Mass, Linear Momentum and Collision, Rotational Mechanics, Gravitation, Simple Harmonic Motion, Elasticity and Fluid Mechanics, each focusing on concept building and application of the concepts in solving varied physical problems.