very simple question!!!!

AT what height on the poles the value of free fall acceleration decreases by 1%?

I m getting two answers
using formula g' = g(1-2h/R) then answer comes- 64kms
using g' = g/(1+h/R)2 then answer comes 32 kms

plz help me out!!!!!

9 Answers

33
Abhishek Priyam ·

Second one [1]

1
Surbhi Agrawal ·

oops sorry... i interchanged the answers
by 1st method... answer comes 32 kms
and by 2nd its 64 kms

1
Surbhi Agrawal ·

2nd answer or formula??????

11
Anirudh Narayanan ·

Second formula, cos it involves no approximation.

But didn't we study that the first formula was an approximation of the second?
I don't think 64≈32!

33
Abhishek Priyam ·

Formula..

as 1st one is approximation for the second formula so as long as both formulas give nearly same answers u can use both but as soon as they show difference use the basic one.. second one..

33
Abhishek Priyam ·

Opsie [3] didn't saw u replying.. [1]

1
Surbhi Agrawal ·

ohk........

11
Anirudh Narayanan ·

So which one is finally correct?

1
Surbhi Agrawal ·

2nd formula should be applied and answer should be 64 kms. but answer given is 32 kms... ??? may be wrong!

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