I will assist you in classical mechanics

This subject includes:

Elementary principles, variations principles, Lagrange's equations, the central force problems, kinematic of rigid body motion, rigid body equations of motion, oscillators, classical mechanics of special theory of relativity, Hamilton equations of motion, canonical transformations, Hamilton-Jacobi theory, action-angle variables, classical chaos, canonical perturbation theory, Lagrangian and Hamiltonian formulation for continuous systems, and fields.