This is a question from a past paper
The drum is a hollow metal cylinder in a washing machine with a series of holes through its surface. When the drum spins, explain how it separates water from wet clothes. (2 marks)
I talked about how a centripetal force acts on the wet clothes so they are seemingly forced to the walls of the drum alongside the water molecules and as the water molecules are small enough to pass through the "series of holes", they will separate out.
When I looked at the marking scheme, this is what they wanted
(1) Water has no resultant/centripetal force
(2) Water continues its motion in a straight line
I see how the second point follows after reading about the law of inertia and how circular motion is what it is. But the first does not seem correct. I mean, isn't it precisely because the water feels a centripetal force, that it continues in its tangential straight line motion allowing it to seep out through the holes?
The info I read on this site would suggest so, but I can't be sure if I've misinterpreted anything, so I need some clarification.