Circular Motion Relatinship

  • Thread starter Epsillon
  • Start date
  • #1
70
1
Alright so in one formula Fc= mv^2/r and another Fc= 4pi^2r/T^2


Although the two formlas are the same Mathematicly but isnt Fc porportional to the inverse of the r as it is shown in the first one. So why is r directly porportional to Fc in the second one?
 

Answers and Replies

  • #2
olgranpappy
Homework Helper
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Alright so in one formula Fc= mv^2/r and another Fc= 4pi^2r/T^2


Although the two formlas are the same Mathematicly but isnt Fc porportional to the inverse of the r as it is shown in the first one. So why is r directly porportional to Fc in the second one?

because if the angular velocity (2pi/T) is constant then v is directly proportional to r. Also, you are missing an m in your 2nd formula.
 
  • #3
70
1
No but isnt it supposed to be inversly proportional?
 
  • #4
olgranpappy
Homework Helper
1,271
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No but isnt it supposed to be inversly proportional?

did you read what i wrote?
 
  • #5
70
1
Yes I understand this now thanks for the help :)
 

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