2006-10-17 07:14:57 · 2 answers · asked by nandu 1 in Science & Mathematics ➔ Physics
it doesn't initially because water is a liquid and the forces don't get transmitted as quickly or as well. The bowl moves, drags the nearby water molecules, but it takes a while until the water is rotating also.
However after a short while the water will be rotating as well, showing the characteristic concave shape (it is a parabola, i.e. y proportional to x^2).
And, if you stop rotating the bowl, the water will take a short while to stop rotating.
2006-10-17 09:23:39 · answer #1 · answered by AntoineBachmann 5 · 0⤊ 0⤋
Newton's 1st law. Inertia.
As AntoineBa... says, over time friction between the bowl and the water will get it all going. But the force is small, so in the short term, Inertia's effect is more noticeable than the friction's.
2006-10-17 17:14:37 · answer #2 · answered by sojsail 7 · 0⤊ 0⤋