Statics problem equilibrium of a particle 2D

red1312 · Oct 3, 2015

1. Homework Statement
In the picture

Homework Equations

In the picture

The Attempt at a Solution

In the picture My question is .. Why in Fx has sin and Fy has cos ?

Free-body diagram of a particle with three forces at angles, labelled with force magnitudes and angles, above a page of handwritten force component equations.

SteamKing · Oct 3, 2015

red1312 said:

1. Homework Statement
In the picture

Homework Equations

In the picture

The Attempt at a Solution

In the pictureMy question is .. Why in Fx has sin and Fy has cos ?

Because of the way the angles are defined and because of how you would find the components of the forces shown. Remember how sine and cosine are defined on a triangle:

Three right triangles labelled with SOH, CAH and TOA: sine is opposite over hypotenuse, cosine is adjacent over hypotenuse, tangent is opposite over adjacent.

Statics problem equilibrium of a particle 2D

Homework Equations

The Attempt at a Solution

Discussion

Homework Equations

The Attempt at a Solution

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