- #1
c42
- 2
- 0
Hi
The problem given is that there is a Force vector:
F=3i(x^2 - y^2) + 2j(x+y)
Then we are given coordinates, where all values are in meters and the magnitude of force is in Newtons.
The question asks to calculate the work done in Joules by this force in a displacement along line y =0 from point 1 (0,0) to point 2 (2,0).
Now I followed the equation W = Fd.
So F= (3x^2 - 3y^2)i + (2x + 2y)j
d= 2i
So W = Fd = 6x^2 - 6y^2
But now I am not quite sure what to plug in for x or y, unless I can do W(final) - W(initial), with point 1 = initial and point 2 = final, which would be 24 Joules.
The problem given is that there is a Force vector:
F=3i(x^2 - y^2) + 2j(x+y)
Then we are given coordinates, where all values are in meters and the magnitude of force is in Newtons.
The question asks to calculate the work done in Joules by this force in a displacement along line y =0 from point 1 (0,0) to point 2 (2,0).
Now I followed the equation W = Fd.
So F= (3x^2 - 3y^2)i + (2x + 2y)j
d= 2i
So W = Fd = 6x^2 - 6y^2
But now I am not quite sure what to plug in for x or y, unless I can do W(final) - W(initial), with point 1 = initial and point 2 = final, which would be 24 Joules.