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    susus's Avatar
    susus Posts: 138, Reputation: 2
    Junior Member
    		  
    #1

    Dec 10, 2010, 11:33 AM
    3 Masses
    M1 is a spherical mass (43.8 kg) at the origin. M2 is also a spherical mass (15.4 kg) and is located on the x-axis at x = 57.0 m. At what value of x would a third mass with a 11.0 kg mass experience no net gravitational force due to M1 and M2?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Dec 10, 2010, 12:37 PM

    Set the forces for gravitational attraction for a mass at distance x from the origin to be equal and opposite. At this point the 3rd mass is x meters from mass M1, and (57-x) meters from mass M2. So:



    Note that the mass M_3 cancels out, so its value doesn't matter. Now solve for x.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #3

    Dec 11, 2010, 01:57 AM

    I thought you had it solved? You could have posted that you didn't understand something :(

    https://www.askmehelpdesk.com/physic...aw-532845.html
    susus's Avatar
    susus Posts: 138, Reputation: 2
    Junior Member
    		  
    #4

    Dec 11, 2010, 07:45 AM
    Comment on Unknown008's post
    Sorry I just copied and paste it , without knowing or noticing that this is the question I posted..
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