Hello Anshumaan, 

The statisctics and dynamics is a unit which is a part of JEE Main syllabus . It mainly constitutes topics such as Composition and Resolution of Forces , Parallel forces , Moments Couples , Equilibrium of a rigid body acted by three forces in a plate , General Conditions of equilibrium of a body acted by forces in one plane , Centre of Gravity , Work Mechanics , Friction , Miscellaneous  etc.

You can go for Arihant books to cover these topics .

Best of Luck !!!