Quick easy question

  • #1

Homework Statement


Okay, im just trying to find out what (i) means in this guys work!

Check attachment!

its says somewhere 3.86 N(i) is that initial?
 

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Answers and Replies

  • #2
Ah okay i think its just a variable to keep track where it came from
 
  • #3
1,860
0
Nah, he saying i as in [itex]\hat{i}[/tex] (there should be a hat on the i...), i.e. the vector component in the i unit vector direction (sometimes also x). It's typical for people to write unit vectors as x->i y->j and z->k.
 

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