Hmm I guess there is no way to say as nature does not allow it. The space time diagrams would have lost symmetry while undergoing a noninertial acceleration. It is a similar situation with the twin paradox.
Thank you for your assistance, PeroK. This curious thought has always come up when I...
Oh I see. Let's just assume that the ground is infinitely flat and the plane and the ground are inertial frames of reference. no mass, no gravity and just a centripetal acceleration for when the plane starts to return to the ground observer. What would the observers have to say, when they...
There are two separate clocks, each set in a plane and on the ground. Assuming inertial reference frames, how can this be?
Perspective of the observer in motion:
The observer in motion on the plane will have recorded some time duration. Since the the world outside the plane is moving at a...
There is no such thing as absolute motion or rest. This is because one can record the speed of an object moving relative to it and find that it is in motion. The same holds for the object in motion. An observer on the object will observe the other observer moving relative to him. The measured...
I have always known that weight is the force of gravity. Yet I have always been confused about one thing. If you hold up an object of mass and drop it, won't the ground experience a force that is greater than when the object just sits there?
Energy is a conserved quantity. It is neither created nor destroyed. The only way to change it is to change by form. Thus, the total energy of any closed system that obeys physical laws is always constant. It does not get more intuitive than that.