Simple Pendulum Simulation by solving 2nd order ODE

Objective: AIM: The Objective of this program is to simulate a transient behaviour of simple pendulum by solving second order ODE into two first order ODE\'s. PROGRAM: clear all close all clc b=0.05; g=9.81; l=1; m=1; %initial conditions theta_0=[0,5]; %time points t_span=linspace(0,20,300); %solve ode [t,results]=ode45(@(t,theta)…