An alternating current is an analogue signal.
An analogue signal is a signal which can take a whole range of values within a certain range.
For example, i(t) = I sin(2pit) takes all the values between -I and I so it's analogue.
An alternating current is a current which alternates...
I'm trying to understand the concept of a control system in electronics.
In a control system, we have a substractor, forward path and feedback path.
The forward path is described by a function g ( a gain function ) and the feedback by another function ( gain again ).
The input is Xi and the...
I could of course write an expression of static equilibirum.
Sum of all moments is zero and sum of all forces is zero.
BUT
How can I transform N into a force? It is a momentum, not really a force.
And what is the realtionship between R and T?
And if T was a torque, why isn't it applied in the...
http://imageshack.us/photo/my-images/121/helperw.png/
Have a look at this picture. It contains my problem.
I don't really know how to differentiate torques, momentums and forces.
I attempted to do as follows :
Get the moment of N ( N*e, with e being a unit vector pointing upwards)
Get...