Fred99:
Rikkitic:
My answers would be A for the first one, because the balloon is easiest to puncture where the pressure pushing against it is least.
What if the pressure was exactly the same everywhere inside the balloon?
Sorry, not thought through. What I meant is that where the balloon is least expanded, as at the bottom, the fabric is not stretched as much, so should be easier to penetrate. I don't know if that is true, but that is how I see it.