I need help with this question options C and D please

(5%) Problem 17: A block of mass m = 190 kg rests against a spring with a spring constant of * = 720 N/m on an inclined plane which makes an angle of 6 degrees with the horizontal. Assume the spring has been compressed a distance d from its neutral position. Refer to the figure. m )0 Otheexpertta.com 25% Part (a) Set your coordinates to have the x-axis along the surface of the plane, with up the plane as positive, and the y-axis normal to the plane, with out of the plane as positive. Enter an expression for the normal force, FN; that the plane exerts on the block (in the y-direction) in terms of defined quantities and g- Fv= mg cos(9) Correct! 25% Part (b) Denoting the coefficient of static friction by , write an expression for the sum of the forces in the x-direction just before the block begins to slide up the inclined plane. Use defined quantities and g in your expression EF, = kd - my mg cos(0) - mg sin(@)