A traffic light weighing 18 pounds is suspended by two cables (see figure).

Jul 2015
7
0
cupertino
A traffic light weighing 18 pounds is suspended by two cables (see figure). Find the tension in each cable. (Round your answers to one decimal place.)

http://www.webassign.net/larpcalclim2/6-3-089.gif

lb (smaller value)?
lb (largest value)??
 

HallsofIvy

MHF Helper
Apr 2005
20,249
7,909
It should be obvious from the symmetry that the two will be the same- there will be no "larger" or "smaller" tension.

Divide into horizontal and vertical components of force. If the tension is "t" then the vertical force in each will be t sin(20) and they must add to the weight of the object.