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    lizajean's Avatar
    lizajean Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Oct 4, 2007, 08:00 PM
    Getting formula for physics
    PHYSICS

    I need help to answer this question because my teacher didn't give me an appropriate formula for this question.

    Question: The weight of an object in space is 500 N (Newtons). What is the object's new weight at a third as great a distance from the centre of the earth?

    What I know is that the Earth's mass is 5.98 x 10^24.
    and the radius of the earth is 6.38 x10^6. Also I know that
    the gravitional field intensity is 9.8N/kg.

    This question is all about mass and force of gravity. If you can help me get a correct formula for this, it will be greatly appreciated. Please explain the question if you can. Thank you.
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
    Uber Member
    		  
    #2

    Oct 5, 2007, 12:57 AM
    It's just standard newtonian gravitation, I'm certain you have the formula for it somewhere. Which formula do you think you should use?
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