Energy Transferred Into and Out of a System

Previous Video: Conservative Force and Potential Energy

Content Times:
0:00 General Energy Transfer Equation
0:48 Methods of Energy Transfer
2:29 Deriving Work due to Nonconservative Force Equation
4:58 Deriving Conservation of Mechanical Energy
5:42 Review!

#APPhysicsC #APPhysics1 #EnergyTransfer

[Anveshkrishna]

Why is change in internal energy equal to the negative of the work due to non conservative force? Does this also mean that the final internal energy in a system is always lesser than the initial energy of a system?

[martinsanchez-hwfi]

A force applied (like the one I do when lifting the book) is also non conservative, but it is not changing mechanical energy into internal, right?

[Anveshkrishna]

Mr. P, why does force of friction not equal change in internal and mechanical energy? Why is that only for force applied?

[broysthgaming]

Why ∆E of the system = ∆ME + ∆ internal E ?

[farhadali]

Sir one question wave is disturbance of medium through which energy is transferring but sir there is no medium in electromagnetic waves.

[daniellelafferty]

Hi Mr. P.! First off, thank you so much for your videos! They are probably the only reason I managed to get a 5 in AP Physics 1. Now, I am using your videos to self-study AP Physics C! I do have one question about this video, though. It's probably a stupid question, but what do you mean by applied force (do you mean a force external to the system?), and how is this different from a nonconservative force? Thank you so much!!!

[kellyhighmore]

Hi Mr.P. i really really need your help, i'm a selflearning student, i droped out of school last year and decided to be a selflearning studend and now i've finished my highschool here in home and i've never done any final exams for my grades in highschool i've never went to any highschool , so do you think i will be able to only do the US diploma exam and go to college without having gone to any highschool??

[Anveshkrishna]

Sorry for the repetition of the messages. Not intended😢

[Anveshkrishna]

Why is change in internal energy equal to the negative of the work due to non conservative force? Does this also mean that the final internal energy in a system is always lesser than the initial energy of a system?

[Anveshkrishna]

Why is change in internal energy equal to the negative of the work due to non conservative force? Does this also mean that the final internal energy in a system is always lesser than the initial energy of a system?