All Questions
6
questions with no upvoted or accepted answers
2
votes
0
answers
710
views
Gravitational potential of an infinite plane
In this link http://www.feynmanlectures.caltech.edu/I_13.html#Ch13-S4 , Feynman first computes the gravitational field generated by an infinite plane of constant density, and then he computes the ...
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0
votes
1
answer
61
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Deriving expression for gravitational potential energy around a mass, $M$, using vectors
(I think my question will be somewhat related to this one: Deriving gravitational potential energy using vectors .)
I know the change in the potential energy associated with a conservative force, $\...
0
votes
1
answer
93
views
Potential energy involving both elastic and gravity
A block of mass $m$ is placed against an ideal spring as shown. Initially the spring (of force constant $k$) is compressed by a distance $s$. The block is then released and slides a distance d up the $...
0
votes
0
answers
44
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Why didn't we account for kinetic energy of two stars in conservation of mechanical energy
Two stars of masses 3×10^31kg each, and at distance 2×10^11m rotate in a plane about their common centre of mass O. A meteorite passes through O moving perpendicular to the star's rotation plane. In ...
0
votes
1
answer
459
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Gravitational potential energy of an isothermal sphere
I am trying to calculate the gravitational potential energy, W, defined as:
$$W = -\frac{1}{2}\int\rho(r)\Phi(r)\mathrm d^{3}r$$
for an isothermal sphere. I am given that the density profile varies ...
- 71
0
votes
2
answers
296
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How do I find the energy difference between two points of a gravitational gradient?
What I'm ultimately trying to figure out is how to calculate only the potential energy attributed to the differences in the force of gravity at two distances from the Earth's center of gravity.
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