Homework Statement
This is not a homework question, but I'm facing this from my research.
I have N complex numbers defined as x_{n}=|\alpha_n| \cdot e^{j \theta_n} for n = 1,\ldots,N
and my observation is the sum of those numbers r = \sum_{n=1}^{N} x_n .
From the observation r, I...
Homework Statement
In general, I know that the dynamic equation of pendulum is
theta'' + (k/m)*thata' + (g/l)*sin(theta) = 0
, where k=friction co, m=mass, l=length of string, g=gravity.
But if the pendulum is placed in a constant draft, the equation has to be changed.
Assuming...