Timeline for Is every frame in which Newton's third law is verified a non-inertial frame?
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
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| Dec 30, 2021 at 2:26 | comment | added | user113581321 | Just correcting a detail about affirmation in Newton's space-time: every frame that is valid Newton's third law, and this reaction of the action-reaction pair generates acceleration in the frame, so this is a non-inertial frame, e.g.: a block that is pushed by the frictional force of a second rough block located below. However, if the third law is verified, without, however, producing an effective acceleration due to the mutual nullification of the forces, then it is an inertial reference, e.g.: a block on the table where the weight force is nullified by the normal force. It's more accurate? | |
| Dec 30, 2021 at 0:49 | comment | added | Dale | @userN yes, that is essentially correct | |
| Dec 29, 2021 at 22:27 | comment | added | user113581321 | So, for Newton's spacetime, the answer is: yes, every frame in which Newton's third law is checked is a non-inertial frame. But for Einstein: no, it's relative. For example, the elevator falling in free fall is subject only to gravity, which for GR is a ficticious force, and GR considers that anything accelerated by just a ficticious force is therefore an inertial frame. However, in the case of an elevator on the ground, in addition to gravity, there is a normal force, which is a mechanical force, therefore a real force, so the frame of reference is non-inertial. That's right? | |
| Dec 29, 2021 at 21:51 | vote | accept | user113581321 | ||
| Dec 29, 2021 at 21:25 | history | answered | Dale | CC BY-SA 4.0 |