Work-Energy In A Non-inertial Frame?

Classical Mechanics Level 2

Not all laws that hold in an inertial frame hold in a non-inertial frame. An obvious example is the law of inertia.

Does the Work-Energy Theorem necessarily hold in a non-inertial frame?

Yes No

2 solutions

Harshit Mittal
Jul 3, 2016

Yes,work energy theorem is valid in non-inertial frames also.Only we've to take care of the pseudo forces & work done by them(fictitious work though).For example as in dynamics problems Newton's laws are applied after taking appropriate pseudo forces in non-inertial frames so do we apply work energy theorem & count work done by these pseudo forces & their effect on energy.

Interesting. Could you post such a dynamics problem for our Problem Writing Party ?

Agnishom Chattopadhyay - 4 years, 11 months ago

Nice question @Agnishom Chattopadhyay By the way, its obvious that it should hold else they would never have been a non-inertial frame in physics. If the law does not hold in non-inertial frames that law would have been discarded because physics does not allow exceptions like chemistry. A law is applicable to every possible mechanics. A single violation would lead to discarding of the lae- :P (I dont think thus is a good approach, I just thought of it).

Ashish Menon - 4 years, 10 months ago

Adarsh Mahor
Oct 3, 2017

Work energy theorem is a universal solution for almost all problems....

It works for all conservative , non conservative , inertial , non inertial,... Everything...(just use work of pseudo force if it's in non inertial)

But why does it work?

Agnishom Chattopadhyay - 3 years, 8 months ago

Work-Energy In A Non-inertial Frame?

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