Force reactions of balls in a tube

[Karol]

Homework Statement

Two smooth balls of radius 10[cm] and weight 6[kg] are inside a tube of radius 16[cm] that's on the table. what are the reactions from the walls and what is the minimum mass of the tube to be in equilibrium

Homework Equations

Disassembling of forces using trigonometry

The Attempt at a Solution

The middle triangle is a classic 3-4-5 straight angle triangle multiplied by 15 so the reactions from the walls are 3x15=45. but the reactions are horizontal so at any weight the cylinder stays in place, no?

 

[Chestermiller]

Aren't the balls exerting a moment on the tube?

Chet

 

[Karol]

That's right, they aren't on one line, i will calculate. but what's with the previous question https://www.physicsforums.com/threads/coefficient-of-friction-between-cylinders.795163/#post-4993752, i didn't get an answer, is my way good? i don't think there is a normal force between the lower cylinders
Edit: now i see that in the last problem i drew it wrong, the cylinders are 1.2 apart (centers)

 

[Chestermiller]

That's right, they aren't on one line, i will calculate. but what's with the previous question https://www.physicsforums.com/threads/coefficient-of-friction-between-cylinders.795163/#post-4993752, i didn't get an answer, is my way good? i don't think there is a normal force between the lower cylinders
Edit: now i see that in the last problem i drew it wrong, the cylinders are 1.2 apart (centers)

I hadn't looked at this thread. I'll take a look a little later.

Chet