Recent content by Kuruwee

I thank you all for your thoughtful and helpful comments. I agree that the "rocket exhaust" does not impact the Equivalence of the two scenarios. In fact I'm counting on it. Imagine the rocket (or elevator) on the surface of a large mass. Inside the rocket you feel acceleration, let's just...

Hi, Let me re-phrase: Assume a point mass and a single instant ( or infinitely short time period). Velocity is zero, but there is acceleration. I agree it is impossible to tell if the acceleration comes from the gravity of a local mass or from a local force. The point mass can't tell. What...

Hi, I'm a new member, interested in physics and relativity and new ways to think about our world. Cheers Chris

Hi, In Einstein's famous elevator experiment, someone in the elevator cannot tell if the acceleration they experience is from the gravity of a nearby large mass, or from their own change of velocity under the influence of some external force. But if there is an external force accelerating...