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!

Find the tension in a rope with a 60kg man hanging on one side

  1. May 17, 2009 #1
    1. The problem statement, all variables and given/known data

    Find the tension in a rope with a 60kg man hanging on one side and a 100 kg box on the other side. The box is sitting on the ground.

    2. Relevant equations

    Fnet= Tension- Force of Gravity

    m1a=t-m1g
    m2a=t-m2g

    3. The attempt at a solution

    I found acceleration which was 2.45, and i plugged it back into formula and got the wrong answer. I know the answer is 603 N, however, i forgot how i came to that answer.
     
  2. jcsd
  3. May 17, 2009 #2
    I applied the following :
    m1=100 kg , m2=60 kg ,, m1a=m1g-T ,, m2a=T-m2g
    (m1+m2)a=m1g-m2g and I get a=2.45 and T=735N in both sides,, so i don't think your answer is wrong ,, but I don't know :P
     
  4. May 17, 2009 #3

    nrqed

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    The box is sitting on the ground, so the acceleration is zero.

    Note that there is also a normal force on the box.
     
  5. May 17, 2009 #4
    If a = 0 and there is N ,, the Tension of the man is different than the box right ??
    m1g-T1-N=0
    T2-m2g=0
    are these equations right ?
     
  6. May 17, 2009 #5

    nrqed

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    The tension on the man is still the same as the tension on the box
    The equations are right , but you may set T1 = T2
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Find the tension in a rope with a 60kg man hanging on one side
  1. Man hanging on a rope (Replies: 14)

Loading...