thanks a lot, I think I will be able to solve it knowing that rule. In any case I already posted the original problem word for word but haven't gotten any answers, I suspect is partly because it is difficult to visualize the problem without the figure that comes with it, but I am unable to...
Homework Statement
Im am attempting to solve very difficult kinematics for a problem in my Dynamics course, and after what I got for the velocity of the particle, I come accros the problem that i can't diferentiate one part.
Essentially I have to get the time derivative of...