by John Cox will be back April 6th 2013 on November 21st, 2011

John Cox will be back April 6th 2013

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That terrestrial bodies tend to fall toward the center of the earth, is a phenomenon of nature that has been proven to invariably occur Yes?

Is there any doubt that terrestrial bodies tend to fall toward the center of the earth? Isn't this a phenomenon of nature that has been proven to invariably occur whenever certain conditions exist or are met?

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Answers. 4 helpful answers below.

  • by Magenta on December 28th, 2011
    voted: Other.

    Magenta

    Kind of- it is not "the Earth", like this planet is special.

    It is that mass has a gravitational pull- the larger the mass, and the closer it is, the stronger the pull.

    The Earth is a gigantic mass right under your feet, so it has a stronger pull on you and everything around you than any other mass.

    But, every mass around you is also puling on you- a bowling ball, a grain of dust, the moon, the sun- but they are all either very small, or very far away, so their force is not as great as the Earth.

    The moon is big enough and close enough that it exerts some measurable influence on the Earth- causing the tides.

    But your bowling ball, not so much.

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  • by skep on December 28th, 2011
    voted: Other.

    skep

    Gravity is not a, "force of nature".

    Gravity is one of the four forces of physics.

  • by Keysha on December 28th, 2011

    Keysha

    Yes, it inevitably occurs when certain conditions are met.

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  • by ErgoStep - Millionaire Websites on November 25th, 2011

    ErgoStep - Millionaire Websites

    The greater the mass of the object the stronger its force of gravity. The moon, for example, has an influence on the earth as shown by the tides.

    The sun has a lesser influence on the tides. It is larger, but further away. The sun and moon are in alignment twice a month (spring tide) causing greater influence on the tides.

    I say this to show that gravity is more complex than is the earth's force. The tides are one easily verifiable test that other bodies of mass exert gravitational force.

    That being said. As we are on the surface of the earth, the largest body of mass lies directly beneath us. Therefore any object will be drawn towards the largest body of mass.

    Pretending we have a hole drilled to the center of the earth, as one travels closer to the center, more of the body of mass is in the other direction, ad the force of gravity is lessened. When one finally reaches the center of the earth one is weightless.

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