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If I were to place a wooden board in a swimming pool 20 metres long and 10 metres wide, and then placed a rock weighing 10kg on top of the board. Would it submerge to the same depth if i were to take the same board and the same rock and place them in the sea?
It may seem like a bizarre question, but its quite important to me.
Any help greatly appreciated.
joined:Dec 9, 2001
How big is the log and how much does it weigh?
Calm water displacement would be different to choppy sea water displacement (I guess).
Is it tied to the log?
Cool question - I haven't a clue how to solve it... ;)
The mass of the water is different, but the object's mass is the same - it still displaces the same amount of water.
Anyway, if the question is about displacement in salt water, then no, it will be slightly different. Higher salt content = less displacement.
Ill try to be a bit more specific now to calirfy it my head, im not good at stuff like this, physics or whatever you call it, robots are my game, although physics is involved, thats what you guys are for right ;)
Lets say the pool is full of sea water, and the salt content of that water is near as damm it the same (if thats possible?)
If the rock is now a can half full of air and half full of water, it will submerge in the pool to say... x metres but no further. Like a submarine?
And then i place it in the sea which is obviously a hell of a lot deeper, will still submerge to x metres or thereabouts or will it submerge to y metres? which is clearly too far.
Hope im bein clear enough here, thanks
You want to know if one object will sink lower depending on the depth of the pool/sea?
I think that if you put a can half full of water (is it salty water or not ; ) it will only sink as low as the level of water in it (might be a bit above the water level because of the salt)
Damn I was never good in physics why did you have to ask that ;(!
If a human equates to your rock half full of air, the human certainly floats better in sea water. Your feet stay on the surface rather than sink!