Questions tagged [relative-motion]
Use this tag for questions related to how objects move relative to other objects dependent on your frame of reference, and how this applies to special relativity.
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Do released objects take the direction and speed of their parent frame's velocity, or just the parent frame's speed component?
Context: I'm working on a space game. I noticed that an unpowered object fired from a strafing spaceship appeared, as the released object moved, to curve in the direction the ship was strafing. This ...
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Location of an object in empty space [closed]
Is it correct to assume that if there is only one object in the void (really empty void), then its location (the answer to the question “where” this object is) cannot be established?
You need at least ...
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Simple classical mechanics problem to compute minimum distance attained between two ships moving with constant velocity
I have been reading the book "A Course in Classical Physics 1 - Mechanics" by Alessandro Bettini. I have reached a problem in the first chapter that I am having trouble with.
The problem ...
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Can a beam splitter be used to measure Earth's absolute motion through space?
Let say the Earth is not moving through space...Then a beam splitter that refracts the beam into 2 new created beams at an angle of 90° towards reflectors which will reflect the beams at 180° again ...
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Why does relative speed of light when in a non-inertial frame does not increase when viewed from an inertial frame [duplicate]
I mean to ask if I have a moving object and I turn on a bulb in that moving object, when viewed from an inertial frame, we usually add the speed of the moving object with the object's velocity to get ...
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How do emitted photons in a moving light clock keep moving sideways with the clock when photons have no mass and therefore no inertia? [closed]
I have yet to read or hear a plausible explanation for how vertically emitted light waves/photons, coherent ones like from a laser, are able to keep moving horizontally with a moving light clock so ...
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CMB dipole anisotropy maping to earth visualization
I do not see how this dipole anisotropy is due to the motion of the earth (and thus a doppler effect). Does anyone have a visualization of how this maps onto the earth and the motion of the earth such ...
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Flying mosquito problem [duplicate]
Let's say there is a car and its doors and windows are closed. Basically it is a closed space inside. There is a mosquito hovering right in the center of closed space of the car. While doing so the ...
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Is frame of reference a point of view? [duplicate]
The definition of frame of reference I found is :"It is just a coordinate". But in solving problem, my teacher always uses frame of reference by considering it at rest (although it is moving)...
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Is the relative velocity between these two particles increasing or decreasing? [closed]
The displacement time equations of two particles are:
$$s_1 = 2t-4t^2$$
$$s_2 = -2t + 4t^2$$
By differentiating we can find $v_1,v_2$. Subtracting them gives: $v_1-v_2 = 4-16t$
Clearly, this ...
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In magnet and conductor problem, what is the source of electric field?
I have difficulty understanding forces involved in moving magnet and conductor problem.
When a ring conductor is at rest and an ordinary bar magnet is moving, there's electric force. I have trouble ...
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The difference of work (i.e. increase of KE) to change speed in different (Galilean) reference frames from the point of view of the energy source?
I fully accept that kinetic energy is not invariant between Galilean frames of reference, velocity is. So the same change in velocity requires different work (i.e. change in kinetic energy) done in ...
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A question on Electromagnetic induction and relative motion
It's a well-known fact that a changing electric or magnetic field induces current, but what if I'm moving in such a way that relative to me there is no change in flux due to whatever external factors. ...
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Sum of geodesic deviation around a triangle in curved spacetime?
So I was pondering about geodesic deviations and I'm confused about the following. Let's say I have $3$ geodesics $\gamma_1(t)$ , $\gamma_2(t)$ and $\gamma_3(t)$. I introduce a parameter $s$ such that ...
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Relative velocity and proper time derivative of geodesic deviation?
From wiki
To quantify geodesic deviation, one begins by setting up a family of closely spaced geodesics indexed by a continuous variable s and parametrized by an affine parameter $\tau$. That is, for ...
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