1. make a sketch of the situation (see attachment) 2. A solid
with a mass of 25 kg develops a vetrical force of 3. Cable and
pole have to develop an uplifting force of the same value. In my
sketch this uplifting force is labeled 4. The angle between pole
and cable is 5. The cable is pulling upward. 6. The pole is
pushing to the right. 7. The angle between the cable and the
uplifting force is 30°. 8. You are dealing with a right triangle
which angles you know and the length of one leg. 9. The force
with which the cable is pulling can be calculeted by: 10. The
force with which the pole is pushing to the right can be
calculated by: