3.1 Distinguish between the following approaches for solving problems. 3.1.1 The method of applying Newton's second law from the Lagrangean method. 3.1.2 The method of applying the Lagrangean from the Hamiltonian method. 3.2 A simple pendulum consists of a particle of mass m on an inextensible massless string of length {. The kinetic energy of the system in Cartesian coordinates is given by: T = m (x² + y²) where x and y may also be expressed in their polar coordinates format as x = { sin 0, and y = - cos 0 respectively.

3.1 Distinguish between the following approaches for solving problems. 3.1.1 The method of applying Newton's second law from the Lagrangean method. 3.1.2 The method of applying the Lagrangean from the Hamiltonian method. 3.2 A simple pendulum consists of a particle of mass m on an inextensible massless string of length {. The kinetic energy of the system in Cartesian coordinates is given by: T = m (x² + y²) where x and y may also be expressed in their polar coordinates format as x = { sin 0, and y = - cos 0 respectively.