1. Limited time only! Sign up for a free 30min personal 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!

Clock Spring Torque

  1. Nov 27, 2012 #1
    I'm winding up a clock spring from the outside and release from the inside. Is the input torque = to the output torque?

    How would i go about setting up this problem
     
  2. jcsd
  3. Nov 27, 2012 #2

    K^2

    User Avatar
    Science Advisor

    Has to be. Imagine that you are just holding the wound spring from inside and outside. If the two torques don't cancel each other out, there is a net torque on the spring. If there is net torque, it has angular acceleration. But you are holding the spring, so it's not accelerating. Therefore, the two torques are equal.
     
  4. Nov 27, 2012 #3
    THank you
     
  5. Nov 27, 2012 #4

    sophiecentaur

    User Avatar
    Science Advisor
    Gold Member
    2017 Award

    I just love those Null Arguments. Bomb proof and take care of all counter intuitive worries.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook