Brain Teasers
Not So Fatso
A young man wanting to tease his sister while they were swimming called out "Look! You're so fat you can't even float like me. You just sink to the bottom!"
To which she replied, "The fact that I sink just proves how stupid you are."
She was right. Why?
To which she replied, "The fact that I sink just proves how stupid you are."
She was right. Why?
Answer
Fatter people have greater buoyancy than thinner, more muscular people do, because fat is less dense than muscle. So the fact that she sank proved him wrong.Hide Answer Show Answer
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Comments
Nice one,but your answer is debatable. If you take two people of the same weight,one is fat(i.e. quite 'round') and another is muscular but 'thinner', then the real answer lies in the fact that the fat person displaces more volume of water than the thinner person which means the buoyancy force on the fatter person is larger, therefore the thinner person will sink faster. Thus it needs to be specified how fat the young man in the riddle's sister was relative to him. Nevertheless, good riddle
super simple
nice one, i like it!
looking foward to more of your teasers!
looking foward to more of your teasers!
this was simple but well persented.
This if for jjansen. It doesn't matter how large you are to determine if you float or sink. The answer to the problem is correct. Whether you sink or float depends on the buoyancy force and gravitational force exerted on you. The buoyancy force equals the the weight of water displaced. If you weigh more than the displaced water, you sink. So in reality, it only depends on the density of the person, which is independent on volume. Fat is less dense than muscle, so when comparing the same weight of fat and muscle, the fat has a greater buoyancy force exerted on it because it takes up a larger volume. So it is correct to say that the girl has less fat because she sinks.
What a mean brother!!
I thoght it was refraction!
all i thought of was that fat is lighter than muscle
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