Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 5-by-1.

clc;

Cd=xlsread('trial',1,'b2:b6');

rho = xlsread('trial',1,'a1:a6');

S=3.2365;

m=1000;

gama=10;

H=input('enter altitude in meter (m)');

V=input('enter the velocity (m/s)');

dt=1;

t=0:dt:10^3;

n=(10^3/dt+1);

Ux=zeros(1,n);

Ux = V*cos(gama);

Uy = V*sin(gama);

for i=1:n

D=0.5.*rho*V^2*S.*Cd;

Ux(1,i+1)=Ux(1,i)-(dt)*(D/m*cos(gama));

Uy(1,i+1)=Uy(1,i)+(dt)*(g-(D/m*sin(gama)));

V(1,i+1)=((Ux(1,i+1))^2+(Uy(1,i+1)^2)^0.5;

i=i+1;

end

Answer 1

[James Tursa]

Looks like Cd and rho are vectors. So the result of those calculations on the right hand side will be vectors. But you are trying to stuff them into a scalar element. You need to rethink what you are doing.

[balasubramanian s]

thanks for the reply sir, will you give me any suggestion

Answer 2

[Lasse Jakobsen]

I think it will be easier to help find the problem, if you provide either the excel-sheet, the workspace variables, or if you type in Cd and rho manually, since these are not available when you just give the script.

[balasubramanian s]

thanks for the reply sir

Density(kg/m3) 1.169 1.064 0.9672 0.873 0.7881

Cd 0.5765 0.6108 0.6818 0.7485 0.87568

this is the value i typed

in excel