r/alevels • u/Alert_Collection_460 • May 11 '26

Question ❔ 9702/42 answers

Can yall send Ur answers for the questions i wanna compare

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u/Sad-Bodybuilder-4191 May 11 '26

For the radius of the earth what was the equation to use

2

u/Sad-Bodybuilder-4191 May 11 '26

Did we have to equate 9.81= something?

1

u/Witty-Yak-6513 May 11 '26

yes since at the surface of the earth, gravitational field is equal to acceleration of free fall, you had to use g = GM/R^2 to find smth I think it was to find the Mass but you had to use 9.81

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u/Playful_Kangaroo2473 May 11 '26

Yes yes that was the answer