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W = Integral force

  • Thread starter dareupgang
  • Start date
  • #1

Homework Statement


A force F = (4xi + 3yj) N acts on an object as the object moves in the x direction from the origin to x = 5.0m. Find the work W= Integral F x dr done by the force on the object


Homework Equations


W= ∫Fx dr


The Attempt at a Solution


∫4xi 2x^2 0 to 5
 

Answers and Replies

  • #2
Matterwave
Science Advisor
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Your work looks right, just evaluate your integral.
 
  • #3
I checked the solution manual and for some reason they extracted the 4 outside the integral 4 ∫(x^2)/2 0 to 5

Is the 4 a constant ? is that why they pulled it out
 
  • #4
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0
I checked the solution manual and for some reason they extracted the 4 outside the integral 4 ∫(x^2)/2 0 to 5

Is the 4 a constant ? is that why they pulled it out

Probably a typo.
 
  • #5
Matterwave
Science Advisor
Gold Member
3,965
326
4 is just a number, how can it not be a constant?
 

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