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Homework Help: 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 [Broken]

    (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 by a moderator: May 3, 2017
  2. jcsd
  3. Nov 23, 2007 #2


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    What wire?

    How is the wire placed in relation to the beam?
  4. Nov 23, 2007 #3
    There is supposed to be a picture, but it wont generate on the website. Go to this link to see the picture. http://answerboard.cramster.com/physics-topic-5-146405-0.aspx [Broken]
    Last edited by a moderator: May 3, 2017
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