Question

A gum bottle rests on its base. If it is placed upside down, how does the 1) thrust, 2) pressure change?

Answer 1

1)As we know, thrust is the force exerted by a body on a surface. Hence thrust = force.

Force = mass × acceleration,
so when the bottle is placed upside down, the mass and acceleration does not change. Hence the thrust remains the same.

2)Pressure is the thrust exerted by a body of a surface per unit area.
The thrust remains the same, so if the area increases then the pressure will decrease, and if the area decreases, then pressure will increase.
So when gum bottle is placed upside down, at base area will be small so pressure will be high.So in this case bottle may be balanced partially.