# Homework Help: Net Force: Tension problems with angles

1. Aug 24, 2010

### uni777

1. The problem statement, all variables and given/known data
A rope forms a Y.

At the end of the Y hangs a block with a W= 100N
Whole the two upper ends are on the walls.
(Left side) $$T{1}$$ with an angle of 90 degrees
(Right side) $$T{2}$$ with an angle of 58 degrees

Find the tension of each rope on the wall.
2. Relevant equations
No definite formulas

3. The attempt at a solution
$$\Sigma$$Fx=$$T{1}$$cos90-$$T{2}$$cos58=0
Summation of Fy=Tsub2sin58-100=0
=117.92

cos90=0
Which makes the value of $$T{1}$$ an error.
Where did I go wrong?

Last edited: Aug 24, 2010
2. Aug 24, 2010

### kuruman

Without a picture, it is hard to imagine what is going on. How are the angles measured? With respect to the vertical or with respect to the horizontal?

3. Aug 24, 2010

### uni777

Oh sorry...
T1 is measured respect to the vertical
T2 respect to the horizontal

As for the picture ill try to provide but erm its like this:
Your left pointing finger must form a right angle with your right pointing finger such that your nails/tips are touching each other.

Then T1 is attached on your left pointing finger.
And T2 is attach on your right pointing finger.

4. Aug 24, 2010

### uni777

oh its like this but instead of a ninja...its a block

5. Aug 24, 2010

### kuruman

OK. So it looks like in the x-direction you have two components of forces. Since the force on the left T1 is entirely in the x-direction (has no y-component), what is its x-component? What about the x-component of T2?