Questions tagged [potential-energy]
Potential energy is the energy of a body or a system due to the position of the body or the arrangement of the particles of the system.
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Rigorous definition of potential energy of a system
In the mechanics textbook by Kleppner and Kolenkow, the concept of potential energy is introduced by considering the behaviour of particle under the action of a force $\vec{F}(\vec{r})$ that depends ...
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Electric field in plane of ring charge
Suppose I have a uniformly charged ring. What I want to know is that if a charged particle, constrained to move only in the plane of ring and initially placed at the centre of the ring when displaced ...
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Momentum distribution of nucleons inside the deuteron (Paris potential)
I am looking for a graph that shows the momentum distribution of nucleons inside the deuteron.
Side note: I know that several models for nucleon-nucleon potentials exist, such as the Paris, Bonn or ...
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Is potential energy always defined by a position in a field?
Most potential energies appear to have their basis in a field, but do all? I know gravitational energy has the form $mgh$, which has a position term $h$ but no velocity. More "internal" ...
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Deriving gravitational potential energy using vectors
Here is my attempt at derivation:
First you must find a vector function for the gravitational force.
By the inverse square law, the magnitude of gravitational force between two bodies of mass $m$ ...
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Thomson problem vs. maximizing sum of distance
Given $N$ equally charged points lying on the unit sphere ("electrons"), the Thomson problem consists of finding the configuration of these points such that the electrostatic potential energy
$$
U=...
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Is the gravitational potential energy of an object on the ground 0? [duplicate]
In class, we were reviewing kinetic and potential energy and my teacher claimed that on the ground, objects have potential energy. However, as they cannot fall further, isn't their gravitational ...
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What are the points to note in a spring+block system? [closed]
This is the solution to a question related to spring+block system, and I have some doubts regarding the concept behind this question
The solution reads
The velocity of the block increases till the ...
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I am confused about potential energy and work done by a force [closed]
Potential energy is the energy contained in a body due to its position. But I don't understand it because when object falls, PE= mgh and work done by gravity, is - mgh. So what is the difference other ...
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Is it impossible to construct a Faraday cage that can block a *static* electric field?
I think the answer is yes. My reasoning is this: Imagine for argument's sake, we could have a charged negative source that has its field blocked by a Faraday cage. We can transport a positive charge ...
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A question regarding Coulomb sum in two dimension
The following arguments can be found in texts about Laughlin's wavefunction and theta function such as Laughlin's paper "Spin hamiltonian for which quantum hall wavefunction is exact". It is ...
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What's happening to the potential energy of electrons after they left battery?
friends. I am new in the electrical field so I must show my guided point of sides that related to my question before I ask it, for understanding how I think. first, let's begin with the battery, I ...
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Under what circumstances the work done by an external force gets stored as potential energy?
Consider earth and a block as a system. The block is accelerating downward under gravity. Now I apply a force against gravity which is less than the force of gravity. Would the work done against ...
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Why does Newtonian gravity necessarily imply that gravitational potential energy is negative? [duplicate]
Why can't the zero value of gravitational potential energy be set at a different point instead of infinite distance within Newtonian gravity?
I am not asking why is gravitational potential energy ...
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Internal work in system made up of a ball and the earth
Assume I am considering my system to be the earth, a ball, and the gravitational interaction between them. No air resistance. Assume the ball has a nonzero initial velocity upward. I understand there ...
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