Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Vector and Force Problem Please HELP!

  1. Nov 5, 2012 #1
    A street light weighing 150N hangs from two wires as shown. One makes a 30 degree angle with the horizontal. The other makes a 45 degree angle with the horizontal. Find the tension in each wire.

    (I have no clue please help!)
     
  2. jcsd
  3. Nov 5, 2012 #2

    Nugatory

    User Avatar

    Staff: Mentor

    Try thinking of the force from each wire as the sum of a vertical component and a horizontal component (you may need some sines and cosines to do this). The object isn't moving, so all of these must balance: the vertical force from the two wires is equal and opposite to the force of gravity, and the horizontal components must cancel.
     
  4. Nov 5, 2012 #3
    Ohh thank u!
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook