Assume a double-sided lever where the left arm has a length of
a and the right arm has a length of
b + c. Please refer to this link for a picture.
F are known and
F3 are not. How do I find the
The lever is weightless and it is in balance. However, it is also in motion and
F is a force acting upon the lever as a whole - it's supposed to be some kind of sum of the
F3 forces - I'm just not certain if I could assume that
F = F1 + F2 + F3. Anyway, the picture could be misleading - it is not acting upon the lever in addition to the other forces.
It feels kind of intuitive to me that I've got a sufficient amount of data. I just don't seem to be able to write down all the possible equations. In other words - how do you describe a double-sided lever with multiple forces applied using math?