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Gravitational related problem

  • Thread starter elle
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  • #1
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  • #2
Tide
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You know what r is in both cases so just use the formula to express F and F' for both cases and compare the two results.
 
  • #3
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I still don't understand...where does R come into the formula?? :uhh:
 
  • #4
Tide
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r is the distance between the center of the Earth and the object in question. That is the symbol people usually use but I just noticed the picture you showed uses "d" to represent that distance so r is the same as your d.
 
  • #5
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Ok please bear with me if I sound dumb...never taken physics before so I'm finding it realli difficult :cry:
So do I have to find m1 and m2? And for G I've been given an approximation for it, and I dunno if I'm suppose to use it :confused:
 
  • #6
Tide
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Assuming that neither the mass of the plane nor of the Earth change then they both cancel out - along with G! They made it really convenient for you. :)
 

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