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

Simple Pulley

  1. Feb 5, 2015 #1
    Hi,

    I am building a simple pulley for a weightlifting machine. In most cases pulleys are designed to lift heavier loads easier, I want to actually make it harder to lift the load… So I don't have to put so much weight on the end.

    Can I amend my simple pulley design in a (simple) way to increase the force required to lift the load at the end?

    In my example I want to lift the 50kg load… How would I make it double the load, so it feels like I am lifting 100kg?
     

    Attached Files:

  2. jcsd
  3. Feb 5, 2015 #2

    Stephen Tashi

    User Avatar
    Science Advisor

    Look at schemes that make a weight easier to lift and interchange the person pulling with the weight being lifted.

    For example, end of rope attached to ceiling. Rope goes under a movable pulley attached to pull-handle and then over a pulley attached to the ceiling and then to a weight attached to the other end of the rope.
     
  4. Feb 5, 2015 #3
    For instance, look at the drawing
     

    Attached Files:

  5. Feb 5, 2015 #4
    Thank-you very much for your replies. Have got a few ideas in mind now about how to make it work.

    Best regards.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Simple Pulley
  1. Gears and pulleys? (Replies: 7)

  2. Pulley and Rope (Replies: 32)

Loading...