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shivam_bhallaBest ResponseYou've already chosen the best response.0
@experimentX , @Siddharth18 , Is Internal energy = Potential energy??
 one year ago

Siddharth18Best ResponseYou've already chosen the best response.0
@ketz is the question in context of mechanics or thermodynamics?
 one year ago

Siddharth18Best ResponseYou've already chosen the best response.0
if that's the case then i guess @shivam_bhalla has got it right
 one year ago

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

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

Siddharth18Best ResponseYou've already chosen the best response.0
but 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
 one year ago

Siddharth18Best ResponseYou've already chosen the best response.0
@ketz if u luk from an inertial frame ,the molecules will be having KE
 one year ago

shivam_bhallaBest ResponseYou've already chosen the best response.0
@Siddharth18 is absolutely right :)
 one year ago

shivam_bhallaBest ResponseYou've already chosen the best response.0
Looks 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
 one year ago

VincentLyon.FrBest ResponseYou've already chosen the best response.2
Hi! 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
 one year ago

shivam_bhallaBest 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
 one year ago

VincentLyon.FrBest 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".
 one year ago
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