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!

Tension on the table top pulley

  1. Oct 3, 2004 #1
    heres the problem:

    A person pulls a heavy load of mass 37kg up the side of a building by using a frictionless pulley. The load travels up a distance of 7.5m. Take the load to move with ocnstant velocity and ignore any acceleration at the beginning or end of the move. How much work is done by the tension in the rope?

    I know the work done by the person and gravity(which are the other two parts of the question) but i'm getting stuck on this part. I'm thinking it would be zero but the rope is moving so i don't know

    Thanks for the help.
    Last edited: Oct 3, 2004
  2. jcsd
  3. Oct 3, 2004 #2


    User Avatar
    Staff Emeritus
    Science Advisor

    Work equals force times distance. That's all you need.

    Since there was no accleration, the force in the rope is exactly equal to the weight of the load.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Tension on the table top pulley
  1. Pulley & Top (Replies: 1)

  2. Pulley on a table (Replies: 2)

  3. Pulleys and Tension (Replies: 6)

  4. Tension and Pulleys (Replies: 3)

  5. Pulley and Tension (Replies: 1)