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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Sliding Friction Force
Sliding friction force is not dependent on velocity. Is wear dependent on velocity? For example, it takes 10 Newtons to overcome sliding friction, no matter if the relative velocity is 1m/s or 1000m/s....
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On a rainy day, a man is running on a hilly terrain in such a way that he is always finding the rain drops hitting him vertically
It is assumed that rainfall is uniform in the whole terrain from O to E(figure attached) When the man was at rest on stretch OA, he found the rainfall at an angle of $30^o $ with the vertical.
What ...
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Velocity Gradient and Force in Air
I have experienced that when we go on a bike at a high speed, keeping our hands close to the surface of the bike is not much a problem and we feel negligible force which the air applies on us. But as ...
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Determination of the speed and angular velocity of 4 rolling cylinders between planks
According to the picture, there are four identical cylinders, with radius R, that are rolling without slipping at every contact point. The upper plank is moving with speed 2v (m/s) towards the right, ...
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Direction of $V_RM$ confusion
So ,please read both the questions . They have similar originate questions that I am facing difficult in.
Let us say rain is falling downwards with v = -5j and a man is moving with a velocity of 2i in ...
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Discretizing kinematics of moving object
I think this is a simple question, but I'm unable to find the relationship:
The relative distance between two objects at any time $t$ can be written as:
$x_r(t)=x_{ro}+\int_{t_0}^{t_f}v_r(t)dt$
where:
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Time dilatation - relative movement
Sorry for eventual factual errors, I am just hobbyist.
A spaceship flies with nearly speed of light away from earth and back.
Time on board were going slower than on earth during flight, so back on ...
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A question about Lorentz force
According to standard electromagnetic theory, if the charge A is stationary and the charge B is moving along arbitrary trajectory then the electromagnetic force on charge A is:
$$\vec{F}_A = q_A \left(...
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Spinning observer inside a solenoid paradox?
It is well known that magnetic fields are frame dependent, with an observer travelling parallel to a moving point charge experiencing no field.
Similarly for a solenoid, a stationary observer on the ...
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Do the time taken to travel a fixed distance changes in two different inertial frame of reference in relative motion
I have calculated time taken to travel a fixed distance by the object from two different frames of refrence. One frame was moving with uniform velocity wrt other . But time taken to cover the equal ...
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Relativistic trajectory in a constant electric field
I'm trying to write the trajectory ($y^i = y^i(t),\ i \in \{1, 2, 3\},\ y^0 = t$) of a particle seen from an inertial reference frame, ${\cal O\ '}$, that moves along $y^2$ axis with constant speed $(...
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Question regarding relative velocities
Suppose I am solving a question, which has statement written
the velocity of boat in still water 10m/s
Now the question turns to a flowing river, so what will 10m/s be, the relative velocity of ...
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Relative motion between two particles
I already know the relation of relative velocity as :
Vab=Va-Vb
So is there any derivation for this relation or is just how it is defined?
Relating to this i am finding some hard time to imagine why ...
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Meaning of the term speed of light in context of an object of non-zero mass
We know from GR that an object of non-zero mass cannot propagate at light. I have a problem with the term speed of light. Does it mean the relative speed of that object with another object or frame of ...
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Why does a charged particle experience lorentz force while moving in a uniform magnetic field?
Firstly, when a charged particle moves in an infinite uniform linear magnetic field, it experiences a force.But,how does the charge or how do we differentiate that the relative position of charge is ...
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