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

[dareupgang]

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

 

[Matterwave]

Your work looks right, just evaluate your integral.

 

[dareupgang]

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

 

[ManyNames]

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.

 

[Matterwave]

4 is just a number, how can it not be a constant?