Resolution of vectors
posted by
Shaila
.
A 1000kg load is suspended from the end of a horizontal boom. The boom is supported by a cable that makes an angle of 35deg with the boom.
a) what is the tension in the cable?
b) what is the horizontal force on the boom?

Resolution of vectors 
Damon
1000*9.8 = 9800 Newtons weight
Force up from cable = T sin 35
force up from cable = weight down
T sin 35 = 9800

Resolution of vectors 
Damon
Force inward from tension = T cos 35
= 9800 cos 35/sin 35
which is the horizontal compression force on the boom.