All Questions
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What would be an experimental test of Sciama’s theory and why it has not been pursued yet?
Recently I came across a video were the origin of inertia was attributed to Sciama’s paper (1953).
I have seen only a couple of questions regarding this topic on Stack Physics. Both of them are ...
- 289
1
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Inertial Mass = Gravitational Mass. Why? [duplicate]
Okay, so the inertial mass of an object is always equal to the gravitational mass of the object. Conceptually, however, they seem different. Then what makes them identical? Is it because they are ...
- 1,065
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What is happening on an atomic level (or lower) when a object is in motion (inertia)?
If you have an iron ball and throw it upwards you are imparting a force which opposes gravity.
Initially this force is easily understood by your hand pushing the ball upwards, so the atoms in your ...
- 129
3
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1
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How are objects kept free falling in the LISA experiment?
I'm watching a video about the LISA experiment, which will be used to detect gravitational waves.
In there, three space stations will be launched and will follow the Earth in its revolution around the ...
- 131
2
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Equivalence of Inertia and Gravity [duplicate]
I'm now wondering...does - energy=mass=inertia=gravity? Are they all, intrinsically, the same, "thing"; that is, the same, "entity".
2
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2
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Why are there so many fundamental differences between contact forces and gravity?
I had this very fruitful conversation about the inertial motion of charged particles on gravitational/electric fields.
A field force like gravity, can't be felt, it does not produce proper ...
- 350
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Gravitational and inertial mass seem to result from different fields, yet virtually the same. How do new physics theories attempt to reconcile this?
As best I understand it, internal mass (at rest) is due to interactions of particles with the Higgs field, and in equation terms, due to various chiral terms, sometimes described as swapping chirality....
- 4,241
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Inertia of an elevator
Imagine a situation where we have a relatively light empty elevator moving up at a pretty high constant velocity say something above $10\ m/s$, just so that it has a considerable amount of momentum ...
40
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10
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Why did we expect gravitational mass and inertial mass to be different?
I've read many times that the fact that gravitational mass is equal to inertial mass (as far as we can tell) used to be a puzzle. I believe that Einstein explained this by showing that gravity is ...
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Is inertia still considered a mysterious force?
When I first saw, for example, weightless objects in a space capsule, I assumed that pushing them would require no effort because, of course, they did not weigh anything. On Earth, heavy objects are ...
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Inertia without gravity
Is there inertia in absence of gravity? If I was in a region of space with zero gravity, would I have to apply some force to accelerate a massive body?
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Why is the ratio of gravitational force and the inertia to resist it 1?
Is there a deeper meaning behind how things of different mass fall at the same acceleration? It feels so perfectly balanced...
- 113
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Calculate stroke force and angle for a ball rolling on a surface to reach a destination position (optimal golf putt)
I'm trying to find an algorithm which calculates the optimal golf putt (angle, force) given a 3D surface (obtained through Poisson reconstruction), start and destination position (hole). I guess that ...
- 101
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2
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433
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Do the inertial mass and gravitational mass of an object depend on the frame of reference?
My understanding is that the "relativistic mass" of an object means any of the following three quantities (which are all identical):
The "mass-energy", as defined by the formula $m = E / c^2$.
The ...
- 1,967
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Does "Quantized Inertia Theory" violate conservation of momentum? [closed]
This recent news article reports that DARPA is doing work with "quantized inertia", despite their claim that it's not widely accepted by physicists:
The Defense Advanced Research Projects Agency (...
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