Mike_bb's latest activity
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MMike_bb replied to the thread Undergrad Why is gravity a fictitious force?.Spacetime curvature is geometric property.
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MMike_bb reacted to Dale's post in the thread Undergrad Why is gravity a fictitious force? with
Informative.
Why not? It just means that you have to redesign your accelerometer. In any case, it doesn’t change the fact that the gravitational... -
MMike_bb reacted to Dale's post in the thread Undergrad Why is gravity a fictitious force? with Informative.
That is reasonable. However, any quantity that is inferred from motion is relative to the reference frame that defines the motion. Its...
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MMike_bb reacted to A.T.'s post in the thread Undergrad Why is gravity a fictitious force? with
Agree.
Except that the electric force cannot be always locally transformed away by a frame change, because it's not proportional to mass like... -
MMike_bb reacted to A.T.'s post in the thread Undergrad Why is gravity a fictitious force? with Agree.
Spacetime curvature is not an interaction, but a property of spacetime. And it's related to tidal gravity, not gravity itself, which can...
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MMike_bb reacted to Herman Trivilino's post in the thread Undergrad Why is gravity a fictitious force? with
Like.
The elevator in space is being accelerated by an external force. For example a rope is tied to the roof of the elevator and pulls on the... -
MMike_bb reacted to Dale's post in the thread Undergrad Why is gravity a fictitious force? with Agree.
Yes. But in GR you should add the word “local”. Locally gravity disappears because in a local inertial frame the inertial force...
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MMike_bb reacted to A.T.'s post in the thread Undergrad Why is gravity a fictitious force? with
Love.
Yes, this the GR interpretation, where the free falling frame is inertial, and gravity is an inertial (fictitious) force. In the... -
MMike_bb replied to the thread Undergrad Why is gravity a fictitious force?.If we consider free falling frame then we can state that gravity dissappear because in inertial frame the inertial force dissappear. Is...
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MMike_bb reacted to A.T.'s post in the thread Undergrad Why is gravity a fictitious force? with Agree.
In GR inertial frame means free falling frame, where a static accelerometer measures zero.
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MMike_bb reacted to PAllen's post in the thread Undergrad Why is gravity a fictitious force? with Informative.
Elevator on the surface of earth is not inertial because the surface of the earth is exerting a real force on the bottom of the...
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MMike_bb replied to the thread Undergrad Why is gravity a fictitious force?.Ibix, Ok. Inertial force arises in non-inertial frame not in inertial. But elevator on the surface of the Earth is inertial frame. From...
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MMike_bb reacted to A.T.'s post in the thread Undergrad Why is gravity a fictitious force? with Like.
An accelerometer on the surface of the Earth measures the upwards proper acceleration due to the upward support force, not the downward...
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MMike_bb reacted to Ibix's post in the thread Undergrad Why is gravity a fictitious force? with Informative.
No, you can measure the upwards force on the suspension point of your spring exerted by the floor. That you cannot separate this into a...
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MMike_bb replied to the thread Undergrad Why is gravity a fictitious force?.Dale, We can measure gravity with an accelerometer if we stay in elevator on the surface of the Earth.