- #1
JustDerek
- 26
- 0
Homework Statement
I've been given a problem with pulleys which I have attached to this post. I've derived the equations shown in the post but I'll also write them below. What I'm struggling with is how to combine them.
Homework Equations
##l_1=S_a+2S_c##
##l_2=S_d+(S_d-S_c)##
##l_3=S_e+(S_e-S_c)##
In a similar example I've been given but with less pulleys it shows :
##l_1+l_2=S_a+4S_d##
This is the part I don't get. I don't get how the two equations combine to become that and I'm sure if I can understand that I can finish the rest.