initial commit / add all books

1 files changed, 22 insertions, 0 deletions

diff --git a/3482/CH4/EX4.8/Ex4_8.sce b/3482/CH4/EX4.8/Ex4_8.sce
new file mode 100644
index 000000000..30856f032
--- /dev/null
+++ b/3482/CH4/EX4.8/Ex4_8.sce
@@ -0,0 +1,22 @@
+clc;

+W=-1200;//N,j  Weight 

+BD=[-2.4,1.2,-2.4];//m, Vector BD

+EC=[-1.8,0.9,0.6];//m, Vector EC

+//T_BD=norm(T_BD)*BD/norm(BD);// m, vector of tension in BD

+//T_EC=norm(T_EC)*EC/norm(EC);// m, vector of tension in EC

+// Applying equillibrium conditions we get

+// Sum_F=0, and Sum(M_A)=0 and setting co-efficient equal to zero

+A=[0.8,0.771;1.6,-0.514];//MAtrix of co-efficient

+b=[-1440;0];//matrix b

+x=linsolve(A,b);// solution matrix

+T_BD=x(1);// N,Tension in BD

+T_EC=x(2);//N, Tension in EC

+printf("T_BD= (%.0f N) and T_EC= (%.0f N) \n",x(1),x(2));

+

+Ax=2/3*T_BD+6/7*T_EC;//N, x component of reaction at A

+Ay=-(1/3*T_BD+3/7*T_EC+W);//N, Y component of rection at A

+Az=2/3*T_BD-2/7*T_EC;//N, z component of reaction at A

+

+printf("Reaction at A is A=(%.0f N)i +(%.0f N)j +(%.1f N)k \n",Ax,Ay,Az);

+//Answe in Newton instead of lbs

+//1lbs=4.44N