Secondaire 5 • 3a
Hi I have trouble with this question. I think my notes don't give me enough informations.
This is the explanation I have
But how do I get theses values
Thank you
Hi I have trouble with this question. I think my notes don't give me enough informations.
This is the explanation I have
But how do I get theses values
Thank you
Ramzi,
coquilles à corriger:
ici
ici
et ici
Explication d'Alloprof
Cette explication a été donnée par un membre de l'équipe d'Alloprof.
Hi !
To get the same answer, you need a specefic formula that you can find by following this link :
Alloprof aide aux devoirs | Alloprof
https://www.alloprof.qc.ca/fr/eleves/bv/physique/l-acceleration-gravitationnelle-p1021The link is in french, but you just need to look at the formula :
In this case, the only thing you need to know is that is the distance between the core of the planet and the altitude. Knowing that we're comparing to point for the same planet, and are the same. Now you can calculate the for each situation. The first one is at the surface :
The second situation will be like this :
If you try to put the first formula in the second one (replace ), you will get this :
We know that is 9.8, but we don't know the value for and . We will assume that is equal to one. This means that is equal to 4 :
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You can now enter the values to obtain this final form :
It gives you the same answer than your notes ! If you have any other questions, do not hesitate !
You just take the weight of Earth radius and transform it on g. After, you multiply it by 3. And you have the answer ;-)!
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