Gravity, Quick Help Please!

  • Thread starter Lavace
  • Start date
  • #1
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Please check the attachment.

The question is:
Find the gravitational field strength at the point A in terms of G.

So I went about assuming we use g = GM/r^2, for both masses, and then subtract them as we're meant to find the overall using vectorial addition.

But, the answer in the back of the book is G/4. I can't seem to get this whatsover.

Could someone run through the calculations please?
Thanks a bunch!
 

Attachments

  • grabv.jpg
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Answers and Replies

  • #2
Doc Al
Mentor
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Show what you've done so far. Explain your diagram. What does X mean? What is R?
 
  • #3
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Both mass and the distance cannot be represented by 'X'.
 

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