Question

How do you know when to use g= 9.81 or G= 6.674x10^-11 for "gravitational force"?

Answer #1

I need to make a model in MATLAB for free-fall using Euler
method.
g=9.81 (gravitational acceleration)
c=12.5 (drag coefficient)
m= 68.1 (mass)
h=0.1 (step size)
v(0)=0 (Velocity is 0 at time zero)
t=[0:100]*h (100 steps)
Vnew= vt+(g-(c/m)*v)*h (this is the equation for the velocity at
each subsequent step
I want to use a "for" loop in MATLAB but i don't know how to
write it properly. Could anyone help me?

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