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shivam_bhalla
 2 years ago
Best ResponseYou've already chosen the best response.0@experimentX , @Siddharth18 , Is Internal energy = Potential energy??

Siddharth18
 2 years ago
Best ResponseYou've already chosen the best response.0@ketz is the question in context of mechanics or thermodynamics?

Siddharth18
 2 years ago
Best ResponseYou've already chosen the best response.0if that's the case then i guess @shivam_bhalla has got it right

shivam_bhalla
 2 years ago
Best ResponseYou've already chosen the best response.0I would say , do you want to consider friction and other viscous force in air? If yes, then falling ball internal energy increases

ketz
 2 years ago
Best ResponseYou've already chosen the best response.0I think it has zero internal energy since there is no change in the kinetic and potential energies of the molecules found inside the ball!!!

Siddharth18
 2 years ago
Best ResponseYou've already chosen the best response.0but one thing confuses me we have considered only the gravitational potential energy but what about the bond energy and static electric energy which constitute the total potential energy of the system

Siddharth18
 2 years ago
Best ResponseYou've already chosen the best response.0@ketz if u luk from an inertial frame ,the molecules will be having KE

shivam_bhalla
 2 years ago
Best ResponseYou've already chosen the best response.0@Siddharth18 is absolutely right :)

shivam_bhalla
 2 years ago
Best ResponseYou've already chosen the best response.0Looks like you are still not convinved @ketz . Imagine you are sitting in a train and you are seeing a passenger sit next to you . For you he appears stationary. Why?? because you are viewing from noninertial reference. If you are looking from ground, you will see the passenger moving(i.e having Kinetic energy). Hopefully this brings clarity to you

VincentLyon.Fr
 2 years ago
Best ResponseYou've already chosen the best response.2Hi! Better go back to definitions! Have a look at the words at the end of the second sentence. This is why internal energy is called 'internal'! http://en.wikipedia.org/wiki/Internal_energy

shivam_bhalla
 2 years ago
Best ResponseYou've already chosen the best response.0@VincentLyon.Fr , looks like you are right and I am wrong . :D . and the answer to the question is zero @ketz

VincentLyon.Fr
 2 years ago
Best ResponseYou've already chosen the best response.2@shivam_bhalla: You gave the answer to the question: "What is the CHANGE in internal energy for a falling ball" The question was : "What is the Internal energy of a falling ball?" So the answer must be: "The same as when it is at rest".
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