Anonymous
Anonymous asked in Science & MathematicsAstronomy & Space · 9 years ago

If the moon through gravitaional pull affects tides on earth?

Why can you be weightless in space ? I would have thought there would be a single point between the earth & the moon where you could be weightless ? Why is this not so ?

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  • 9 years ago
    Best Answer

    Yes, you are correct. That point between the Earth and the Moon is called the Lagrange point one.

    The Lagrange points are the five positions in an orbital configuration where a small object affected only by gravity can theoretically be stationary relative to two larger objects (such as a satellite with respect to the Earth and Moon). The Lagrange points mark positions where the combined gravitational pull of the two large masses provides precisely the centripetal force required to rotate with them. They are analogous to geostationary orbits in that they allow an object to be in a "fixed" position in space rather than an orbit in which its relative position changes continuously.

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  • 9 years ago

    If you are in orbit around the Earth, you experience "free fall". That is weightlessness. If you are in free fall toward the Earth, you are still weightless. When you make contact with a large mass such as the Earth (or Moon), then you weigh something.

    The Moon's gravitational attraction can tug on the fluid shape of the oceans and raise the tides (as can the "wobble" of the Earth as it dances with the Moon in orbit). But your shape isn't going to distort from the Moon's gravity. And, even though the Moon might pull on you when it is overhead at night, what about the Sun's gravitational effect on the other side of the Earth. Either way, the effects are so minor as to be considered insignificant.

  • Anonymous
    9 years ago

    You can also feel weightless while falling off of a cliff - until you hit the floor. You're not weightless, you're in free fall. There will be a point between the Earth and the Moon where the gravity of each would cancel out. At any other point, without being in an orbit, you would feel weighless but would still fall towards either the Earth or the Moon.

  • 3 years ago

    Gravity does not ever "act haywire." The gravity of planets is totally deterministic and relies upon least confusing on lots and distances. particular, the tides on a moon like Pandora might plausible be very intense. it would almost with out doubt tidally lock the moon to the planet. If Pandora have been compelled into an elliptical orbit (like Io is compelled by using Europa), then it would desire to be very volcanically lively. for people who jumped on Pandora, you does not bounce any larger than worry-loose. It makes no replace the place the planet is in this representation; each you and Pandora are already freely falling in orbit around it. It can't influence your bounce in a freely-falling reference physique different than you start intense adequate for tides *alongside your direction of bounce* to alter into significant, which will no longer take place.

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  • Alan
    Lv 7
    9 years ago

    Astronauts in orbit experience no weight at all so they call it weightlessness

    This is not gravityless, there is lots of gravity in near earth orbit but it is canceled out by the centrifugal effect as they orbit at 17000 mph

  • 9 years ago

    Yes It does so... Thats Y U can observe some changes regarding the height of the Tides during NEWMOON & FULLMOON Days when compared to the normal days...

  • Anonymous
    9 years ago

    Space has no form earth-like gravity.

  • Anonymous
    9 years ago

    maybe you alone are not big enough to have an effect? im not good at science...

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