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Edexcel A level Physics unit 5 multiple choice Q -> Help!? Watch

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    Can anybody show the worked solutions/explain the reasoning behind
    why the answer is B. :puppyeyes:

    https://gyazo.com/08b215cacd70a293d7c79cc2af8abf7f


    Thanks in advance!
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    Would you be able 2 help me?

    I'm not sure if you even started A2 physics revision yet. :erm:
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    (Original post by XxKingSniprxX)
    Would you be able 2 help me?

    I'm not sure if you even started A2 physics revision yet. :erm:
    So it should defo be a decrease - because you're moving away from the centre, so it's either A or B; how can you rule out A or ascertain B?
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    (Original post by XxKingSniprxX)
    Can anybody show the worked solutions/explain the reasoning behind
    why the answer is B. :puppyeyes:

    https://gyazo.com/08b215cacd70a293d7c79cc2af8abf7f


    Thanks in advance!

    call the field strength at the base of the mountain 1.000gm (i.e. one martian g)

    then field strength at the peak in gm is

    1/(1.006)2
    =0.9881

    0.9881-1.000 = -0.1189

    ---
    note gravitational field strength is +ve... A level formulae sheets give earths g=+9.81 iirc... so more distance from CoM means a -ve change in field strength.
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    (Original post by Joinedup)
    call the field strength at the base of the mountain 1.000gm (i.e. one martian g)

    then field strength at the peak in gm is

    1/(1.006)2
    =0.9881

    0.9881-1.000 = -0.1189

    ---
    note gravitational field strength is +ve... A level formulae sheets give earths g=+9.81 iirc... so more distance from CoM means a -ve change in field strength.
    Thanks, I get it now. Its definitely the most trickiest multiple choice question I've seen. :lol:
 
 
 
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