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Homework Statement
Find the normal force in terms of g, m, θ and α. There is no friction. a=0, θ≠α
See first attachment for diagram
Homework Equations
F_{x}=ma_{x}
The Attempt at a Solution
I drew a free body diagram including the forces; normal, mg, and F_{A} (See second attachment) I'm not sure if this is complete as I don't know where α would be part of it.
However I did start with this,
ηmgcosθ=0
η=mgcosθ
mg=η/cosθ (eq'n 1)
F_{x}=ma_{x}
F_{A}mgsinθ=ma_{x} (sub eq'n 1 in)
F_{A}(η/cosθ)sinθ=ma_{x}
F_{A}(ηsinθ/cosθ)=ma_{x}
Attachments

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