What is the Work Done by a Force Moving an Object from the Origin to x=5.0m?

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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
 
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Your work looks right, just evaluate your integral.
 
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
 
dareupgang said:
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.
 
4 is just a number, how can it not be a constant?
 

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