Originally Posted by Ayesha Mahmood

Mechanics by Q.K.Ghori,
Vector and Tensor Analysis by Dr. Nawazish ali and Schaum's outlines
Numerical Analysis by Schaum's outlines or any B.Sc level book is sufficient
Differential Equations with boundary value problems by Zill and cullen, and ordinary and partial differential equations by Agerwall, Regan

This is the material that will be sufficient for the whole preparation. You can do topic of Moment of Inertia from B.Sc level Physics book.