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

Homework Help: Centrifugal forces

  1. Jun 15, 2005 #1
    excluding the answer of centrifugal forces, why is there a tension in a piece of string with a mass attached on the end, going in a HORIZONTAL circular movement, when the mass is always accelerating towards the centre anyway??
     
  2. jcsd
  3. Jun 15, 2005 #2

    dextercioby

    User Avatar
    Science Advisor
    Homework Helper

    The tension force IS the centripetal force.So a centripetal acceleration automatically means a tension in the string.

    Daniel.
     
  4. Jun 15, 2005 #3
    is this using newtons 3rd law, that when a force acts on something, it will then have an equal force exerted back onto it? so the centripetal force keeping the mass in orbit, has an equal force (the tension) to the centripetal force in the string?
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook