All Questions
Tagged with newtonian-gravity energy
15
questions with no upvoted or accepted answers
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Angular momentum of the center of mass of yo-yo reaching the end
I am a physics undergrad, and I know only a basic stuff about the subject.
Yesterday, I was taught about the angular momentum of a yo-yo and
my professor said that when the yo-yo hits the end of the ...
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Doubts about the effective potential in Newtonian gravity
I'm studying for a physics exam in a CS degree and the professor introduced the effective potential related to gravitation.
Given $\vec v_r$ the component of the velocity of a planet that is parallel ...
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Power Generation Via 2 connected objects below distinct orbits
As an example:
Large weight A sits just below Earth's orbit
Large weight B sits just below Moon's orbit
A, B are connected by sufficiently strong material (may not exist, and if so how much ...
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Can the gravitational singularities of black holes be solved by potential or self-energy?
In Newtonian Mechanics, the energy density of gravitational field is negative in comparison with the positive energy density assigned to mass density, meaning that that the total positive energy of ...
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Relationship between height and mass?
Objects with different masses are placeed on the horizontal surface of a table. The objects are then raised to different heights above the tabel. The gain in gravitational potential energy of each ...
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1
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Why Gravitational Potential is same In Both these cases?
We usually choose Reference point as Infinity which is Linear to the Points
and by this way we gat work done as both force and displacement are in the same direction as well as in the same line which ...
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57
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Confusion about an explanation for gravitational's potential energy
So we know that $\Delta U = -W$, where $\Delta U$ is the difference of potential energy and $W$ the work done by the force to move the body from point A to point B.
When analyzing this for the ...
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Limitations Of Work-Energy Theorem
Consider the given system which shows a chain $AB$ of length $l$ and the end $A$ is held at rest.
Suppose we release the chain at time $t=0$. How do we find the velocity of the chain when the end $A$ ...
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4
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510
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How work done by a force on a body is negative?
The work done is the product of force acting on a body and the displacement of the body in the direction of the force.
The gravitational potential $\text{energy}=Mgh$ is the negative of the work done ...
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2
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420
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How much more net energy do I use walking up hill?
I have a question regarding work done / energy done.
Say a $70\mathrm{kg}$ man walked $100\mathrm{m}$ on a horizontal surface as a constant speed, is it correct to assume the energy done by this man ...
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Kinetic energy in "interplanetary" Gravitational potential energy problem?
For a system of two completely stationary planets both of the same radius and mass, when launching a projectile (e.g. a rocket) from point A on the left planet - assuming we know U - minimal kinetic ...
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How to calculate the total energy of a planet at rest?
Let's just say we have the Earth-Moon system isolated in space, with Earth at rest, and the moon orbiting it.
How can we calculate the total energy of Earth in such a case (Kinetic energy would be ...
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1
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152
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What is the total energy of a object if i throw it so far from the earth that it doesnt move towards earth? It seems there is energy loss
Let us assume that i throw a object A with velocity V_A. Then it reaches certain height H_A. At that point it has total energy which is equal to its potential energy and it comes down converting PE to ...
-1
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2
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Energy Creation Using Water, Generators, and a Pump
So a friend and I are arguing over an infinite energy idea that he had about using gravity, that is an almost infinite source of energy. Water to use to push a generator by dropping and hitting the ...
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Why is the work done by the parallel component of gravity equal to $mgh$?
I understand the mathematics behind why they are equal but I don't understand it in terms of intuition , for example when moving a cart along an incline plane the work done by the parallel component ...
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