thull
Well-Known Member
Questions 26 & 27 of mechanical comprehension in the ASTB study guide. Does a beach ball have more buoyancy near the surface of the water or deep down?
well, since water does not increase in density, a beach ball would have the same buoyancy near the surface as it does deeper down.
in fact if you were to get technical, the pressure would shrink the size of the beach ball as you took it further down, lowering the displacement of the water, making it less buoyant than near the surface when more fully expanded.
but the answer sheet says it feels more buoyant deep down.
I assume the answer sheet is wrong?
well, since water does not increase in density, a beach ball would have the same buoyancy near the surface as it does deeper down.
in fact if you were to get technical, the pressure would shrink the size of the beach ball as you took it further down, lowering the displacement of the water, making it less buoyant than near the surface when more fully expanded.
but the answer sheet says it feels more buoyant deep down.
I assume the answer sheet is wrong?