High School physics/Kinematics/ statics question

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A block rests on a plane which is inclined at 35 degrees. A force $F_b$ is applied to it at an angle of 40 degrees to the plane. $F_g = 980$ Newtons is the force due to gravity and $F_n$ if the normal reaction. See diagram. What are the steps that I would need to take in order to calculate what $F_b$ would be if the mass is at equilibrium? It's difficult for me to calculate it because $F_n$ changes when $F_b$ changes Assume that there is no friction

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There are 2 best solutions below

7
On

$F_gcos55 = F_bcos40$

$F_b = \frac{F_gcos55}{cos40}$

0
On

$F_gsin(35)=F_bcos(40)$

you can calculate $F_b $ from the above equation

$F_gcos(35) - F_bsin(40) = F_n$

You can calculate The normal force $F_n$ fropm this.