from sympy import *import numpy as npimport matplotlib.pyplot as pltimport math#基本参数g=9.8l=60f=2Ac=8.15Ic=3622000*(10e-8)E=2.06*10e3m=1435.2#方程运算H0=(m*g*(l)**2)/(8*f)He=20502900v1=1-(H0