A gum bottle rests on its base. If it is placed upside down,

(i) How does the thrust change?

(ii) How does the pressure change?

(i) A gum bottle has broader base and narrower neck and when it is placed upside down there will be no change in thrust as thrust is the weight of the body that is exerted on the surface.

(ii) When gum bottle is placed upside down, surface area is less so pressure will be more as pressure is inversely proportional to surface area.