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Thread: Physics question - gravity

  1. #16
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    Quote Originally Posted by Juzz976 View Post
    The 3kg would have 3 x the Gravitational force accelerating it towards the earth, but because its 3 x the mass the force needs to be 3 x to get the same acceleration. The 3kg will impact with more energy however.
    You were so close - all you needed to do was join all the dots and you had a complete the picture.
    Why does it have 3 times the G force? Because it needs to move 3 times the mass.....which impacts with 3 times the energy......why.....because it had 3 times the potential energy, created by mass being 3 times the size, and therefore causing the g-force to be larger........
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  2. #17
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    Quote Originally Posted by Juzz976 View Post
    The hammer, the hammer and feather would pull into eachother due to the gravitational force between them. The feather would move toward the hammer faster as the same force applied to a smaller mass. The feather is now taking a longer route towards the moon as its vector has shifted more than the hammer.

    Maybe the feather, if the moon is far enough away the feather will collide with the head of the hammer thus causing the hammer and feather to spin (very slowly) the feather will have an affinity towards the centralized mass (hammer head) and the hammer may possibly land ontop of the feather.
    WTF!
    Your kidding right.
    What about the super large rock your standing on, y'know the one that the moon is attracted too?
    Or the big glowy thing in the sky - that the solar system is attracted too.
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  3. #18
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    Quote Originally Posted by avgas View Post
    WTF!
    Your kidding right.
    What about the super large rock your standing on, y'know the one that the moon is attracted too?
    Or the big glowy thing in the sky - that the solar system is attracted too.
    relative distances, acceleration from the objects is of less magnetude and very very much the same vector acceleration is applied to both objects.

    Of course the moon is moving so does the hammer and feather fall from zero velocity relative the centre of the universe or at relative moon speed, and in relation to what?

    "Honest officer the sun pulled my car into the path of the motorcycle"
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    "The expensive motorcycle will accelerate exponentially faster, and more often towards the ground than the inexpensive motorcycle. "

    so if the exponent was ˛ as with most simple maths your saying a my $10,000 dirt bike accelerates four times quicker than my $5,000 road bike?

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    Quote Originally Posted by davereid View Post
    Acceleration due to value is the rule here.

    The expensive motorcycle will accelerate exponentially faster, and more often towards the ground than the inexpensive motorcycle.
    Soooo, if we take a MV and a Hyobung and throw them both off the skytower the MV will hit the S-class in the carpark first?
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    Quote Originally Posted by pzkpfw View Post
    What we should do is spend a ton of money sending someone to the Moon, where they can drop a feather and a hammer at the same time, to see which hits the Moon first.
    They've already done it and they landed at the same time.
    I might be wrong here but I believe that experiment was definitive proof of Newtons theories.
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  6. #21
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    Quote Originally Posted by DEATH_INC. View Post
    Soooo, if we take a MV and a Hyobung and throw them both off the skytower the MV will hit the S-class in the carpark first?
    I theory yes, but this is mostly attributed to the repulsion forces the hyobung has with the general population of the planet its is falling toward.

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    Its Been Done - Apollo 15


  8. #23
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    Gravity is a myth the earth sux

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    Gravity only works on the over 40s

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    Meanwhile, back in reality land...


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    Quote Originally Posted by DEATH_INC. View Post
    Soooo, if we take a MV and a Hyobung and throw them both off the skytower the MV will hit the S-class in the carpark first?

    Absolutely.

    In fact, even if the S-Class was not actually directly under the MV, it would find an angle of descent to ensure it hit the S-Class anyway.

    This effect is known as mutual entrophy, and it is the the reason that a-likes attract.

    So the expensive motorcycle is attracted by mutual entrophy to the expensive car. Even when not crashing, they will be found in the same neighbourhoods, or even as close as the same garage.

    It also explains why all the asians live in Howick and thus can be considered one of the more robustly proven principles of physics.
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  12. #27
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    Quote Originally Posted by DEATH_INC. View Post
    Soooo, if we take a MV and a Hyobung and throw them both off the skytower the MV will hit the S-class in the carpark first?
    No it'll hit the Bongo van because of the gravity created by the extra mass of all the kids in the back eating KFC until the olds come back from the pokies.

  13. #28
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    Quote Originally Posted by SMOKEU View Post
    If we're talking about such large distances, then a fat skydiver will have a lot more surface area, and therefore air resistance, in comparison to a skydiver whom is not of such a large carriage.
    Nope. Fatties plummet faster.
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    Quote Originally Posted by SMOKEU View Post
    If we're talking about such large distances, then a fat skydiver will have a lot more surface area, and therefore air resistance, in comparison to a skydiver whom is not of such a large carriage.
    Not true. All mammals have the same surface-area-to-volume ratio, irrespective of whether or not they are gerbils or whales. Or obese skydivers.
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    correct answer? hmmmm

    mad

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