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

1. Can anybody show the worked solutions/explain the reasoning behind

https://gyazo.com/08b215cacd70a293d7c79cc2af8abf7f

2. Would you be able 2 help me?

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

I'm not sure if you even started A2 physics revision yet.
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?
4. (Original post by XxKingSniprxX)
Can anybody show the worked solutions/explain the reasoning behind

https://gyazo.com/08b215cacd70a293d7c79cc2af8abf7f

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.
5. (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.

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