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Gravity

Discussion in 'Christianity & Science Forum' started by Josho, May 30, 2017.

  1. Josho

    Josho Well-Known Member Encounter Team

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    Gravity, what can we do with it? Could it be used for other things like making electricity? Is there anyway we could take advantage of it? Is gravity the same all around the earth?
     
    Last edited: May 31, 2017
  2. Job

    Job Well-Known Member

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  3. lforrest

    lforrest Well-Known Member Staff Member Admin

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    We already take advantage of gravity.

    [​IMG]
     
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  4. liafailrock

    liafailrock Active Member

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    I have a gravity operated clock using potential energy stored E=mgh.
     
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  5. lforrest

    lforrest Well-Known Member Staff Member Admin

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    In mathematics gravity would be considered a conservative vector field. The potential energy of an object between two points is the same regardless of the path it takes from A to B.
     
  6. bbyrd009

    bbyrd009 Groper

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    at what cost though
     
  7. bbyrd009

    bbyrd009 Groper

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    gravity implies anti gravity, which is i believe what you are looking for here. solve that!
     
  8. Job

    Job Well-Known Member

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    If you have the high ground and you're engaged in a rock fight, gravity's your friend.
     
  9. liafailrock

    liafailrock Active Member

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    That's correct. Despite the path, if we integrate the force as some function of distance over it's path (from A to B), we find that the area is the same if it simply moved vertically from A to B. Such is the case of my gravity operated clock. I'm so happy that the cuckoo clock's weights drop vertically so as to spare me of those calculations. :D
     
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  10. lforrest

    lforrest Well-Known Member Staff Member Admin

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    One method of generating power directly from gravity is tidal generators, which take advantage of the tides as the name suggests.
     
  11. Josho

    Josho Well-Known Member Encounter Team

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    Nice, got a picture of it? :)
     
  12. Josho

    Josho Well-Known Member Encounter Team

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    Diagram please? hahhaha this is probably some pretty basic stuff, but it looks like we got some intelligent minds around here, I haven't had a look at Job's video yet, but looking at liafailrock's post that would mean gravity is all the same between solid ground and the earths atmosphere? Is that what you 2 are saying?
     
  13. Josho

    Josho Well-Known Member Encounter Team

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    Hmm interesting, but are they all optical illusions hahaha, there's a spot where i ride a mountain bike on this range, and I cycle uphill, but there is a certain point on my way up, it starts to feel like I am going downhill, or on the flat, because the pedalling speeds up, and it's easier to cycle on that part of the mountain range, but it still looks like I'm going uphill, could anyone around here explain that besides an optical illusion? it's literally 2-3 times as easy to cycle on that part of the mountain, while it still looks like I'm looking into the uphill, up the road when I'm riding the bike, and there doesn't seem to be a noticeable change of gradient. lol
     
  14. lforrest

    lforrest Well-Known Member Staff Member Admin

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    It is hard for me to explain, it is part of what I would consider high math. A vector field defines the vector for any point on the graph, and it can be a 2D or 3D field or more if you can conceive of such a thing. Vectors are in basic physics, and represent a direction and magnitude from a point. Gravity can be represented as a vector because it is in a direction (down) and has a magnitude (~ 9.8 m/s2 at sea level). We simplify gravity on earth because the earth is massive compared to anything we build. In reality any two objects have gravitational attraction based on their distance and respective masses. Even a satellite orbiting the earth experiences gravity, and is kept aloft by its high velocity which decays very slowly in orbit.
     
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  15. liafailrock

    liafailrock Active Member

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    Here's one like it:

    [​IMG]
     
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  16. Wafer

    Wafer Active Member

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