How Do You Calculate the Magnitude of the Second Force?

[ancase21]

Homework Statement

Two forces act on a 39 kg mass to give it an acceleration of 26 m/s^2 in the positive x direction. If one of the forces acts in the negative y direction with a magnitude of 450 N, what is the magnitude of the second force. Answer in units of N.

Homework Equations

Fx:ma

The Attempt at a Solution

 

[tiny-tim]

welcome to pf!

hi ancase21! welcome to pf!

(try using the X² icon just above the Reply box )

Show us what you've tried, and where you're stuck, and then we'll know how to help!