Physics, asked by supervegetavscell, 1 year ago

Find this. Will a fish experience weight of boat floating above it . And why?
I know that it wont. And also by implying archemedies law it would mean the fish was under heavier weight of water before.

divyansh101dabral: ok hear my explanation

divyansh101dabral: see you pushed both, and made them attain same velocity, then you leave them, the book having more inertia will retain it longer than the pencil , which will be stopped by friction quickly

supervegetavscell: Ok.

supervegetavscell: But I can only see tomorrow night.

divyansh101dabral: what

divyansh101dabral: ok gud night, keep posting good questions

supervegetavscell: I was thinking whether I subconsciously more force was applied. We can eliminate this by using larger objects.

supervegetavscell: Let's say a football and a rock. If I kick the football and rock under same parameters then the rock stays unmoved but the football will travel long distance.

supervegetavscell: To move the rock I would have to place my hand on it then start pushing. But if I do the same thing with the ball it will travel lesser distance than first time even if my hands are moving with velocity equal to the kick in first case

divyansh101dabral: yee i was also expecting that your problem is not physical but biological, where your body decides how much force should be used for objects

Answers

Answered by divyansh101dabral

i will tell the reason, so see the boat is floating,. that means it has lower average density than water(which is necessary condition for floating).Now it displaces water from over the fish, and replaces the volume of water displaced with itself.Now the water that was earlier above had more density than the boat, so for two objects of same volume, the one with more density has more weight.The weight over the fish has decreased as the dense water was replaced by less dense boat.Even in your question it is mentioned that the fish was under more pressure before.Now a final detail. The blood pressure of the fish counteracts the weight of water normally, so it can also counteract the pressure exerted by boat which is less than the pressure exerted by water.

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Find this. Will a fish experience weight of boat floating above it . And why? I know that it wont. And also by implying archemedies law it would mean the fish was under heavier weight of water before.

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Find this. Will a fish experience weight of boat floating above it . And why?
I know that it wont. And also by implying archemedies law it would mean the fish was under heavier weight of water before.