The crate which of weight F is to be hoisted with constant velocity from the hold of

Question:

The crate which of weight F is to be hoisted with constant velocity from the hold of a ship using the cable arrangement shown. Determine the tension in each of the three cables for equilibrium. Units Used: kN = 103 N
Given:
F = 2.5kN
a = 3 m
b = 1 m
c = 0.75 m
d = 1 m
e = 1.5 m
f = 3 m