Energy Conservation in Non-Inertial Frames: Real Work?

In summary, in non-inertial frames, a pseudo force acts on bodies and the work done by this force is considered real. However, there is no universally recognized criteria for determining what is considered "real" in physics. If the inertial forces in the frame are monogenic and do not depend on time, then the law of energy conservation holds. However, this may not be the case for frames with varying acceleration values.
  • #1
sadhu
157
0
in non inertial frames , a pseudo force act on the bodies
but is the work done by this force is real?

if it is ,will the law of energy conservation hold in non inertial frames too , as everything is gaining velocity due to pseudo acceleration.
 
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  • #2
sadhu said:
in non inertial frames , a pseudo force act on the bodies
but is the work done by this force is real?
There is no universaly recognized criteria in physics to determine whether something is "real" nor is there a universaly recognized definition of that term. But in my opinion, yes, the work is real.
...if it is ,will the law of energy conservation hold in non inertial frames too , as everything is gaining velocity due to pseudo acceleration.
If the inertial forces in that frame are monogenic (i.e. derivable from a potential energy function) and are not explicit functions of time, then yes, energy is conserved in those frames. However this may not be the case for frames of reference for which the acceleration does not a constant value.

Best wishes

Pete
 
  • #3


The concept of energy conservation holds true in all frames of reference, including non-inertial frames. The work done by a pseudo force is indeed real, as it is a force that causes a change in the energy of a system. This pseudo force is necessary to account for the acceleration of the non-inertial frame, and it does work on the bodies within the frame.

The law of energy conservation states that energy cannot be created or destroyed, only transformed from one form to another. This means that the total energy of a system must remain constant, regardless of the frame of reference. In non-inertial frames, the energy may appear to be changing due to the presence of the pseudo force, but the total energy of the system remains the same.

It is important to note that the concept of energy conservation in non-inertial frames is not a new concept, but rather a different way of looking at the same principle. The laws of physics remain the same, regardless of the frame of reference, and energy conservation is a fundamental principle that applies in all frames.

In conclusion, the work done by a pseudo force in non-inertial frames is real, and the law of energy conservation holds true in all frames of reference, including non-inertial frames.
 

Related to Energy Conservation in Non-Inertial Frames: Real Work?

1) What is a non-inertial frame?

A non-inertial frame is a reference frame in which an object appears to accelerate even when no external forces are acting on it. This is due to the fact that the frame itself is accelerating or rotating.

2) Why is energy conservation important in non-inertial frames?

In non-inertial frames, the concept of energy conservation becomes more complex because the forces acting on an object may appear to change its energy even though no external work is being done. Therefore, understanding energy conservation in non-inertial frames is crucial to accurately predict the motion of objects in these frames.

3) How is real work defined in non-inertial frames?

In non-inertial frames, real work is defined as the change in kinetic energy of an object, taking into account the work done by both external forces and pseudo-forces (fictitious forces that arise due to the acceleration or rotation of the frame). Real work is necessary to maintain the principle of energy conservation in these frames.

4) Can energy be conserved in non-inertial frames?

Yes, energy conservation can still be applied in non-inertial frames as long as real work is taken into account. This means that the total energy of a system (kinetic energy + potential energy) will remain constant even though the forces acting on the objects may appear to change their energy.

5) How can energy conservation be used in practical applications involving non-inertial frames?

Understanding energy conservation in non-inertial frames is important in various practical applications, such as designing space missions, predicting the motion of objects on rotating platforms, and analyzing the motion of objects in a moving vehicle. It allows for more accurate calculations and predictions of the behavior of objects in these frames, leading to more efficient and effective designs.

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