1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Tension in fishing lines

  1. Sep 9, 2010 #1
    1. The problem statement, all variables and given/known data
    Two fishing lines hook onto one fish. The tensions in the lines are 20N and 30N, the angle between them being 30 degrees. Use a triangle of forces to find the magnitude of the resultant force of the tensions.

    2. Relevant equations
    cosine rule a^2 = b^2 +c^2 -2cbcos(theta)

    3. The attempt at a solution

    Triangle gives b=20, c = 30 and theta = 150.

    Solving Resultant = 10root(6root(3) +13)

    ANSWER IS GIVEN AS 10root(7), don't know how they get to this.
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Sep 9, 2010 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Re: Dynamics

    Your answer is correct.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Tension fishing lines Date
Difference of Tensions Thursday at 4:46 PM
Rope's tension Wednesday at 4:34 PM
Hanging pith balls on a thread..charge, Fg, Fe and tension Mar 15, 2018
Box lifted off the ground by a tension force at a 32 degree angle Mar 15, 2018
Moving Fish / Line Tension Feb 15, 2005