Hmmm, so perhaps to address this I should point out that technically the water is exerting a force along all points on the object, so using Newton's third law I cannot find a net force upward. Only by using the pressure differential, do we see that the forces exerted on the top of the object are...
I assigned a question: Explain the physics mechanism that results in the buoyancy force.
Some students replied: The floating object is interacting with the water. Therefore it exerts a downward force on the water. The water then exerts an upward force on the object due to Newton's Third Law...
Yes, that is clear to me. I framed that in the title to point out that i see the difference is between the framing of two or three objects. But that does not answer the question of why in the 2 object scenario we are ok with accelerations between Earth and one of the spheres being different...
Hello,
I've been thinking about the nature of Newton's Laws and had a question about two scenarios where I'm noticing a difference in the way the problem is framed and the outcome. I cannot sleep because it is wracking my mind.
Let me start by stating what I know to be true going into the...