Statics Homework Problem: Solving Forces Using Sin Law

[killersanta]

Homework Statement

http://img843.imageshack.us/img843/5370/helpxd.jpg

Homework Equations

Sin law

The Attempt at a Solution

I got to:

F1/sin(105) = F1u/sin(45) = F1v/sin(30)


I get F1u = - 219 and F1v = 254.5... It says it is wrong, not sure what I did.

 

[LawrenceC]

For starters, take a look at your answer. You are providing it to 6 significant figures.

Secondly, you are resolving a force of magnitude 250 into components. But you compute one of the components to be larger than the force. How can that be?

 

[LawrenceC]

Hint: When you resolve a vector into components you form a right triangle with the hypotenuse being the vector to be resolved.