Question

A chandelier of mass 120.0kg is supported by two cords. The first makes an angle of 60° with the ceiling and the second supports it horizontally to the wall. Find the tension in the two cords (g=9.8ms²)

Answer 1

let tl be tension in the tilted cord, th tension in the horizontal cord.
Horizontal:
Th=Tl*cos60
Vertical:
120g=Tl*sin60

solve for Tl in the vertical equation, then th

Answer 2

T2 = -T1*Cos60 = -0.5T1.
Eq1: T1 = -2T2.

T1*sin60 = 120.
T1 = 138.6 kg.

In Eq1, replace T1 with 138.6 and solve for T2.

Answer 3

I don't understand the explanation on this question