if law of conservation of energy is true ..what happens to the mechanical energy of freely rotating shaft .??

Question

if we start an egine and allowed to run.here the chemical energy of fuel is converted into heat.further this heat energy is converted into mechanical energy of rotating shaft.if this shaf is connected to a generator it will produce electric energy & if connectd to pump it will lift fluid.what happens to that energy if we leave that shaft rotate free with out using..is that entire enrgy transferred to AIR surrounding shaft...??????

Answer 1

All energy eventually ends up as heat. It's a consequence of the second law of thermodynamics

Answer 2

i think of you would be complicated paintings with capability... yet after all, the wording of this Q is humorous... in case you had a ball on the best of the hill and then enable it roll down the hill, could you ask have been the capability went??? you're changing gasoline (capacity capability) into kinetic. area of that kinetic capability is observed because of the fact the rotating shaft... sure, balls roll down hill! and you're asking the place the capability went because of the fact the ball rolled down the hill? An merchandise with consistent mass is in loose fall, the finished capability of place a million will equivalent that of place 2. (Ek+Ep)a million = (Ek+Ep)2 on the backside of the hill (while the gasoline runs out), countless the aptitude capability has been grew to become into kinetic, what occurs to the ball? It keeps rolling! even if, on a clean flat floor it extremely is going to finally end through friction (air and rolling).

Answer 3

It is radiated as heat into the air. it's been YEARS since i've taken thermodynamics and mech eng. but i think that's what happens.

Answer 4

yes, all energy must be used, it would spin faster, and the engery would move the air around it.

Answer 5

friction and heat