Can I get the solution for this Engineering physics problems? Subject is Classical Mechanics.

The image posted below is the question, and I also put a link for the needed textbook. the photo tells you what the question is and what you need to do.

Reference Textbook: Classical Dynamics of Particles and Systems 5th Ed., by S.T. Thornton and J.B. Marion, Cengage Learning 2012.

file:///C:/Users/menhe/Downloads/Classical-Dynamics-of-Particles-and-Systems%20(1).pdf

Help ? 1) Two equal masses, each m, are attached to each other and to 2 fixed points A and B by three identical springs (each with constant k) as shown. The masses are constrained to move along a semi-circle of radius R in a horizontal plane. Find the Lagrange equations of motion. Then introduce new variables which decouple these equations. Solve the decoupled equations and identify frequencies of the normal modes 2) A double pendulum consists of two simple pendula, with the lower one attached to the mass of the upper one. Each pendulum has a bob of mass m and a string of length /. Considering only small oscillations (so the small angle approximation applies) identify the characteristic frequencies and normal modes of the system. 3) Find the frequencies and normal modes for the system below consisting of 3 identical masses, m, coupled to four identical springs, each with force constant k. Assume that the springs are unstretched in the equilibrium position