24、线性方程组的求解方法与应用

线性方程组的求解方法与应用

1. 位置与力向量及力矩计算

在进行力学分析时，常常需要计算位置向量、力向量以及它们所产生的力矩。以下是使用 MATLAB 进行这些计算的代码：

%Define the position vector
clear,clc
rx = input('Enter the x component of the position vector: ');
ry = input('Enter the y component of the position vector: ');
rz = input('Enter the z component of the position vector: ');
r  = [rx, ry, rz];
disp('The position vector is')
fprintf('%8.2f i + %8.2f j + %8.2f k ft\n',r)
%Define the force vector
Fx = input('Enter the x component of the force vector: ');
Fy = input('Enter the y component of the force vector: ');
Fz = input('Enter the z component of the force vector: ');
F  = [Fx, Fy, Fz];
disp('The force vector is')
fprintf('%8.2f i + %8.2f j + %8.2f k lbf\n',F)
%Calculate the moment
moment = c