I need help with this problem (my work is at the bottom):

http://img96.imageshack.us/img96/9823/physicsquestiondd9.jpg [Broken]

Here is what I tried:

[tex]a_x[/tex] from graph = 3 m/s^2

[tex]Fnetx[/tex] = m* [tex]a_x[/tex]

[tex]F_n_e_t_x[/tex] = 3.9 N

[tex]F_n_e_t_x[/tex] = -3 + [tex]F_2*\cos(\theta)[/tex]

6.9 = 9.0*[tex]\cos(\theta)[/tex]

[tex]\cos(\theta)[/tex] = 0.7667

[tex]\theta[/tex] = 39.9 degrees from x-axis

degrees between forces = 180+39.9 = 219.9 degrees

This is wrong and I've been trying to figure out what to do for a long time so I'm hoping someone can help me out please? Thanks

http://img96.imageshack.us/img96/9823/physicsquestiondd9.jpg [Broken]

Here is what I tried:

[tex]a_x[/tex] from graph = 3 m/s^2

[tex]Fnetx[/tex] = m* [tex]a_x[/tex]

[tex]F_n_e_t_x[/tex] = 3.9 N

[tex]F_n_e_t_x[/tex] = -3 + [tex]F_2*\cos(\theta)[/tex]

6.9 = 9.0*[tex]\cos(\theta)[/tex]

[tex]\cos(\theta)[/tex] = 0.7667

[tex]\theta[/tex] = 39.9 degrees from x-axis

degrees between forces = 180+39.9 = 219.9 degrees

This is wrong and I've been trying to figure out what to do for a long time so I'm hoping someone can help me out please? Thanks

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