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## Homework Statement

http://apcentral.collegeboard.com/apc/public/repository/ap-physics-course-description.pdf

Page 45

## Homework Equations

sinθ = opp/hyp

tanθ = opp/adj

cosθ = adj/hyp

G ≈ 10 m/{s}^2

## The Attempt at a Solution

I know that the weight is a force pointing downwards (towards the center of the Earth) and the normal force is perpendicular to the plane. The inclined plane is a 30-60-90 triangle. However, I'm having trouble figuring out which equations to use exactly (our teacher gave these problems to us at the start of AP Physics without any instruction. They are kind of like a heads-up for us to know what kind of questions we should be expecting).