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Using MATLAB, calculate the change of angle , and plot them versus time (time span: 0 s0.3s). Submit the MATLAB codes you wrote along with the simulation results. The initial conditions of the are given as (O)=80 and (0)=0/sec. The 10kg rigid rod positioned on a frictionless surface as shown in the below figure and then released from that position t=0. When L=0.4m,g=9.81m/s2, answer the following problems