Dynamic vs kinetic vs static in physics

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Dynamic, kinetic, and static are fundamental concepts in physics that describe different states of motion and forces. Dynamic refers to systems in motion where work is done, while static pertains to systems at rest where no movement occurs. Kinetics focuses on the forces and motion of objects, whereas statics deals with forces in equilibrium. Resources like Wikipedia and HyperPhysics provide accessible explanations and definitions for these terms, although some users caution against relying solely on them for academic citations. Understanding these distinctions is crucial for grasping the principles of mechanics in physics.
shushi_boi
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This is not a homework question, just a simple physics question which I decided to ask here. I held off from asking in the other general physics forum because I get accused of asking random questions that are insignificant. I really want to understand these terms and how they are compared in physics. I understand that dynamic is work done as intended and static is the opposite I think.
 
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shushi_boi said:
I held off from asking in the other general physics forum because I get accused of asking random questions that are insignificant. I really want to understand these terms and how they are compared in physics.


So why not do some of your own research? The Wikipedia articles on the three topics you mention define them well.

http://en.wikipedia.org/wiki/Kinematics

http://en.wikipedia.org/wiki/Dynamics_(mechanics )

http://en.wikipedia.org/wiki/Statics

PF is great for asking about specific details, it's not designed as a primary source of information.
 
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I got this all from my textbook, in mechanics and systems, but I did not know that wikipedia was a reliable scientific source for scientific knowledge. I appreciate your response billy, thank you for posting!
 
I probably wouldn't cite it for anything, but I've never been lead astray via wikipedia. ~99.9% of their stuff is cited with scholarly or other respectable sources and clicking the little number after a statement will take you to the link for the info. I use it frequently when I want some quick fast info. That and hyperphysics, the only problem with hyper is sometimes I feel like they don't go into enough detail. I haven't run into that issue on wiki.
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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