# Determining tension in strings

1. Oct 4, 2010

### connie5828

1. The problem statement, all variables and given/known data
An object of mass 100kg is hanging from a ceiling by means of 2 strings. The 1st string (t1) makes an angle of 55 degree with the horizontal-right. The scond string 9T-2) makes an angle of 25 degree with horizontal left. Calculate tension in the first string (T1)

2. Relevant equations
w = m|g|

wx = w cos θw

wy = w sin θw =

T1x = T1 cos θT1 =

T1y = T1 sin θT1 =

T2x = T2 cos θT2 =

T2y = T2 sin θT2 =

T1x + T2x + wx =

T1 =

T1y + T2y + wy =

3. The attempt at a solution
I am stuck on this question. i have tried plugging in for the equations and none of the answers I have come up with are close to any of the choices. My professor is no help. Someone please explain this to me

2. Oct 4, 2010

### jhae2.718

Try drawing a free body diagram of the forces acting on the block. Then, sum the forces in the x and y directions. You should have two expressions with which you can solve for T1.