1. Not finding help here? Sign up for a free 30min 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!

Please verify if my answers are correct.

  1. Nov 23, 2007 #1
    A hungry bear weighing 750 N walks out on a beam in an attempt to retrieve a basket of food hanging at the end of the beam. The beam is uniform, weighs 200 N, and is 5.80 m long; the basket weighs 80.0 N.

    Go to this link for the picture. http://answerboard.cramster.com/physics-topic-5-146405-0.aspx

    (a) Draw a free-body diagram for the beam. (Do this on paper. Your instructor may ask you to turn in this sketch.)

    (b) When the bear is at x = 1.10 m, find the tension in the wire and the components of the force exerted by the wall on the left end of the beam.

    372.1 N (tension)
    186.05 N ( Fx)
    707.45 N ( Fy)

    (c) If the wire can withstand a maximum tension of 750 N, what is the maximum distance the bear can walk before the wire breaks?

    3.868 m

    Part B) 0-(750)(1.10)-(200)(2.90)-(80)(5.80)+Tsin60(5.80)=0 so T=372.1 N

    Fx=(372.1)cos60=186.05 N

    Part C) T=750

    (750)(sin60)(5.80)-(750)Xmax-(200)(2.90)-(80)(5.80)=0 solve for Xmax

    Xmax=3.868 m

    Are my answeres correct? I only have once chance to enter in my answer for webassign.

    Last edited: Nov 23, 2007
  2. jcsd
  3. Nov 23, 2007 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    What wire?

    How is the wire placed in relation to the beam?
  4. Nov 23, 2007 #3
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?