Question

I tried using mgcostheta for Normal for but i seem to be going about it wrong

Answer 1

Step-by-step explanation:

Sum the forces in the y direction:

∑Fᵧ = maᵧ

Fnorm + Fᵧ − Fgrav = 0

Fnorm = Fgrav − Fᵧ

Fnorm = mg − Fapp sin θ

Plug in values:

Fnorm = (7.84) (9.8) − (42.9) (sin θ)

You need to know the angle to find the normal force.