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!

Torque problem -- Squirrel standing on the end of a branch

Tags:
  1. Nov 30, 2014 #1
    1. The problem statement, all variables and given/known data
    A 600-g squirrel stands on the end of a 2.5-m-long branch that makes an angle of 60 degrees with the vertical trunk of the tree. What torque acts on the branch due to the squirrel?
    2. Relevant equations

    Torque= FxD torque=torque
    3. The attempt at a solution
    I'm pretty stumped on this one. I converted 600g to kg getting .6 kg. Then multiplied that by 9.8 to get a force of 5.88. Then I found the length of what I think is D by using sin(30) = x/2.5 to get 1.25. Then I did torque= 5.88(1.25) to get 7.35 Newton meters. I have a feeling i'm completely wrong though. Any help would be appreciated.
     
  2. jcsd
  3. Nov 30, 2014 #2

    Bystander

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    What makes you "think" this is D?
     
  4. Nov 30, 2014 #3
    Well I thought getting a straight line would be the correct way of getting torque.
     
  5. Nov 30, 2014 #4

    Bystander

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    A straight line pointed what direction?
     
  6. Nov 30, 2014 #5
    Horizontal to the ground
     
  7. Nov 30, 2014 #6

    Bystander

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    Good. And how do you get that from a 2.5 m branch which is 60 degrees to a vertical tree trunk that is perpendicular to the ground?
     
  8. Nov 30, 2014 #7
    Cmon mate, throw me a bone here buddy. I just figured it made sense through a picture I drew.
     
  9. Nov 30, 2014 #8

    Bystander

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    How far is the horizontal distance from the end of the branch to the trunk of the tree? The branch is the hypotenuse of a rt. triangle, and you've been given two of the angles.
     
  10. Dec 1, 2014 #9

    CWatters

    User Avatar
    Science Advisor
    Homework Helper

    We can't see your picture but are you sure it's 2.5*sin(30)?

    Sin = opposite/hypotenuse
    so
    Hypotenuse*sin = opposite
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Torque problem -- Squirrel standing on the end of a branch
  1. Standing waves problem (Replies: 1)

Loading...