Yes, if it is at rest then it means its density is same as that of displaced water. But say object is sinking due to having greater density than water. How does that work out ?
hi, I really hope you again can spare some your time for this thread
Doesn't the water get more dense and thus more heavy the deeper you go, and so buoyant force gets bigger?
I understand that if an object is sinking it has momentum and since the point of contact with water on any level...
So for an object to give away all of its momentum in a moment it would have to collide with an object with large mass?
It makes sense on some intuitive level, but is there way to explain why it doesn't give away all of its momentum in a brief moment if it collides with a piece of paper or...
hi, thank you for helping
For same momentum change if we increase the time of impact by factor ten then force is smaller by factor ten.
But why is that? I mean why doesn't a moving object at point of impact give away all of its momentum at the instant it hits something,no matter if that...
Sorry to bring this up again ... I'd like to read on forces when object is in motion (force needed to stop a brick at certain speed etc)
What must I write in search engine to produce the correct results?
But you are contradicting yourself a little(probably not, but I see it as such) ...
Gosh, subject really got me confused so I hope you can help me at least one more time
Could part of the problem be that so far I only dealt with forces acting on objects in equilirium? As such, using my previus example, so far I haven't really learned how to calculate the force falling brick...
Please have patience with me. I would really need some thorough explanation on this since I'm totally lost. Below are just few questions I have but i'd appreciate if you could offer as much explanation you can think of with regards to this subject
Why exactly must object be in...
I know that. When I said sum of forces is zero I meant forces applied on an object. Two forces are exerted on an object from above:
*F[object]=Force of gravity + weight of the water
*So object exerts F[object] on water below it
*Due to Newton's 3. law water should exert same force on...
I really hope you can find the time and explain this to me
What confuses me the most is why water at the bottom of an object
always exerts up same force,no matter if there is an object above it or just water?
I know that since an object is not in equilibrium the net force is greater...
hello
Buoyancy is the upward force exerted on an object immersed in fluid, and upward force on an object in a fluid is equal to the weight of the fluid that was displaced.
If this bouyant force is less than the weight of the object itself, the object will be left with a net downward force...
Well if the two forces are applied on a book around what would the book rotate.Around its center of mass or does it depend on where on the body the two forces are applied.If it would rotate around center of mass...why?
But if those two forces are infact net forces,then how do you decide...
I did proof but still have two questions
M=F( r1*sin(a) + r2*sin(b) )=F*d
d=F*r1*sin(a) + r2*sin(b)
What if body has no rotation axis,if it is just your regular book or something like that?Could these two forces actually represent the sum of many forces applied on multiple points on the...
hi
If two equal forces in oposite direction act on an object in translational equilibrium it will just rotate and continue to be in translational equilibrium.No matter where on the body two forces are applied?
As simple as possible please: How did we come up with
torque= F *...