Polygon Of Forces To Demonstrate Equilibrium

[sperrya]

Homework Statement

Use the polygon of forces to demonstrate that a 200 kg crate on a 25^o incline is in equilibrium on the slope.

Homework Equations

See attached

The Attempt at a Solution

Please see attached for my attempt, I think I am in the right ball park, just need to know what seat to be in, i.e. how do I plot the answer to satisfy the question. Please help...

Thanks

 

[SteamKing]

You must draw the force polygon so that the forces show the correct magnitude and direction. For instance, how must the weight vector of the box be drawn?

 

[sperrya]

Hi there, thanks for your reply, I know I need to draw a force triangle of some sort, but unsure how to do it with the information I have. Even then, is this a correct polygon of force??

Thanks

 

[SteamKing]

What direction is the weight force usually drawn?