Question about Pulleys and AMA/IMA?

Question

If you have a pulley system which had a fixed pulley attatched at the top of a retort stand. And Through it came a rope which attatched to a movable pulley which is attatched to the load. What would be the IMA and how would I calculate the AMA?

Answer 1

I presume that
IMA stands for Ideal Mechanical Advantage
while
AMA stands for Actual Mechanical Advantage
since their is no mass and radius of pulleys nor is there any friction present it looks as an ideal system to me.
So AMA=IMA

We have weight that is equally distributed between two ropes (one attached to the fixed pulley and the other going from movable to fixed pulley. T1=T2=(1/2)W

Then T3=T2=.5 W so the
Ideal Mech Advantage = Load over effort
W/T3= W/(0.5 W)2.