Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Pull force

  1. Jun 2, 2010 #1
    A man is trying to pull his car by using rope. Which one is easier to pull? holding the rope nearer to the car or further from the car?
  2. jcsd
  3. Jun 2, 2010 #2

    Meir Achuz

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    There is no difference unless you are so close to the car that the rope is not nearly horizontal.
  4. Jun 2, 2010 #3


    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor

    .. or if the rope itself has a considerable weight.

  5. Jun 2, 2010 #4
    The greater impact might be when you are too much close to the car, in that case you will have direct influence of your force on the car
  6. Jun 2, 2010 #5
    The force is transfered without loss at any distance.
    However, there is a perfect angle for pulling objects. The ratio between pulling the object up and pulling it horizontal can be optimized.
    But I assume the for a heavy car the best pulling angle is nearly horizontal.
    In the end also the human anatomy matters. In some positions it's easier to pull.
  7. Jun 2, 2010 #6
    There is more gravitational attraction between the man and the car when close, but on the surface of the earth it's completely insignificant.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook