Particles attached to the ends of a rigid rod Part 1

Particles attached to the ends of a rigid rod Part 1

Particles 1 and 2, each of mass m, attached to the ends of a rigid rod of mass 0.50m and length L1 + L2, with L1 = 20.cm and L2 = 80. cm. The rod is held horizontally on the fulcrum and then released. What are the magnitudes of the initial angular and linear acceleration of a) Particle 1 b) Particle 2