Register to reply

[matlab] I just want to plot a function that describes position as a function of time

by Raziel2701
Tags: describes, function, matlab, plot, position, time
Share this thread:
Raziel2701
#1
Oct2-10, 07:36 PM
P: 129
It's an object that's falling from rest. The equation takes into account linear friction. in any case, this is is my code or program of whatever it is called:

m=80;%Mass of ignorance
g=9.8;%Gravity
beta=1.6*10^-4;%Given coefficient for air at STP
D=.4;%Diameter of Palin, assuming she's a spherical object
b=beta*D;%Coefficient of linear friction
t=0:.2:60;


x=(m./b)*(g*t + e^(-b*t./m));

plot(t,x)
grid on
xlabel('time','FontSize',16)
ylabel('Position of Sarah Below Helicopter','FontSize',16)

I get this error:
Error in ==> HW13myprogram at 10
x=(m./b)*(g*t + e^(-b*t./m));

What am I doing wrong?
Phys.Org News Partner Science news on Phys.org
Experts defend operational earthquake forecasting, counter critiques
EU urged to convert TV frequencies to mobile broadband
Sierra Nevada freshwater runoff could drop 26 percent by 2100
Dr Transport
#2
Oct3-10, 12:24 PM
Sci Advisor
PF Gold
P: 1,475
replace your equation with

x=(m/b)*(g*t + e.^(-b*t/m));
hasidim
#3
Oct3-10, 01:27 PM
P: 15
It worked fine for me with:

x=(m./b)*(g*t + exp(-b*t./m));


Register to reply

Related Discussions
Position Function of Time Introductory Physics Homework 4
Particle's position as a function of time - Integration Introductory Physics Homework 13
Position as a function of time General Physics 3
Position as function of time General Physics 1
A position time function! Introductory Physics Homework 5