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    alshaymah's Avatar
    alshaymah Posts: 31, Reputation: 0
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    #1

    May 31, 2007, 10:08 PM
    How we calculate the distance to the moon
    How we calculate the distance to the moon :confused: . I know the experiment but I want the numbers in kg
    By this low=
    Distance to the moon/diameter of the moon =distance to the marble/diameter of the marble

    Distance to the moon= diameter to the moon* distance to the marble/diameter of the marble

    Thank you.
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    May 31, 2007, 11:11 PM
    I'm not sure what your equations are measuring..

    We can measure the distance to the moon accurately because we know how quickly it orbits us. We can balance the centripetal force with the gravitational force.

    Recently we have been able to bounce lasers from mirrors left on the moon by astronauts to get a more accurate distance.
    alshaymah's Avatar
    alshaymah Posts: 31, Reputation: 0
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    #3

    Jun 1, 2007, 12:00 AM
    Quote Originally Posted by Capuchin
    I'm not sure what your equations are measuring..

    We can measure the distance to the moon accurately because we know how quickly it orbits us. We can balance the centripetal force with the gravitational force.

    Recently we have been able to bounce lasers from mirrors left on the moon by astronauts to get a more accurate distance.

    Hi thank you very much for your answer at lest you trying to help

    Am using this expeirment on this site : Arbor Scientific - Coolstuff Newsletter - Volume 10

    I want the sizes by using a ruler.

    Regards
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #4

    Jun 1, 2007, 12:29 AM
    I can't find the experiment on that site to find the distance of the moon. :o

    Are you using a marble to cover the moon exactly? I seem to see what you're getting at now.

    Your equation seems right. It should give you the distance to the moon as long as you know the diameter of the moon. What problem are you having?

    None of the numbers are in kg...
    alshaymah's Avatar
    alshaymah Posts: 31, Reputation: 0
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    #5

    Jun 1, 2007, 04:43 AM
    Quote Originally Posted by Capuchin
    I can't find the experiment on that site to find the distance of the moon. :o

    Are you using a marble to cover the moon exactly? I seem to see what you're getting at now.

    Your equation seems right. It should give you the distance to the moon as long as you know the diameter of the moon. What problem are you having?

    None of the numbers are in kg...

    Now I recognize that I posted two questions.
    one that I want a lab report about any physic subject.
    second: I want to know the answer of the calculation of how to measure the
    distance to the moon by using a ruler and marble. As you read the procedure in
    the web site.
    now I want to know the answer by using this low:


    Distance to the moon/diameter of the moon =distance to the marble/diameter of the marble

    Distance to the moon= diameter to the moon* distance to the marble/diameter of the marble

    I hope ypu understand me now. :(

    <<<<feel so bad
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #6

    Jun 1, 2007, 05:01 AM
    Okay, you can hold the marble up so that it covers the moon exactly. Then you measure the distance from your eye to the marble. You also measure the diameter of the marble.

    However, you need to know the diameter of the moon, I don't know if you're allowed to take that from scientific literature or not.

    Let me know. The only way to measure the diameter to the moon yourself is by knowing the distance to the moon which as mentionned before has been measured in a variety of ways, which kind of defeats the point. There are other ways to measure the diameter but I don't think your teacher wants you to go that far.
    alshaymah's Avatar
    alshaymah Posts: 31, Reputation: 0
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    #7

    Jun 1, 2007, 06:30 AM
    Quote Originally Posted by Capuchin
    Okay, you can hold the marble up so that it covers the moon exactly. Then you measure the distance from your eye to the marble. You also measure the diameter of the marble.

    However, you need to know the diameter of the moon, I don't know if you're allowed to take that from scientific literature or not.?

    Let me know. The only way to measure the diameter to the moon yourself is by knowing the distance to the moon which as mentionned before has been measured in a variety of ways, which kind of defeats the point. There are other ways to measure the diameter but I dont think your teacher wants you to go that far.

    Thank you very much Capuchin at lest you care about my question
    And tried to help me.
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #8

    Jun 1, 2007, 09:07 AM
    I hope we can get to the point where I can help you ge the answer you are after.
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