How Do You Calculate Tension Correctly in a Pivoting Rod System?

[Zynoakib]

Homework Statement

A 10 000-N shark is supported
by a rope attached to a 4.00-m
rod that can pivot at the base.
Calculate the tension in
the cable between the rod
and the wall, assuming the
cable is holding the system
in the position shown in Figure
P12.49.

Homework Equations

The Attempt at a Solution

(10000N)(4cos60) = (Tcos20)(4sin60)
T = 6144 N

Why is it wrong?

 

[paisiello2]

You've only taken the horizontal component of the cable. What about the vertical component?