Just out of curiosity, when you say "force on the block" you are referring to a lower pressure that will (I hate to use this term) "suck" on the block? In other words, you want to know if you'll have enough flow to pick up the block?
Yes
So you have 4 inlets & 1 outlet...
Conservation of mass??:
A1v1+A2v2+A3v3+A4v4 = A5v5
unknowns: v1, v2, v3, v4
A=area
v=velocity
Bernoulli??:
P1+P2+P3+P4+(1/2)p(v1^2+v2^2+v3^2+v4^2)+pg(z1+z2+z3+z4) = P5+(1/2)p(v5^2)+pg(z5)
P=pressure
v = velocity
p = density
g =...
See attachment for piping system setup.
Question: How much FORCE will the block feel from the air flowing through the two holes in the lower pipe?
I have no idea how to calculate this. Does Bernoulli's equation apply anywhere here?