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: Simple variable control question.

  1. Dec 21, 2005 #1
    Hello, I am making a lab investigating friction of an object and I just need a "method" of controlling acceleration in the experiment so the object travels at a constant velocity. This is really the only way I can think of having the experiment work out correctly so I really need help with this. Any help is greatly appreciated, thank you!
  2. jcsd
  3. Dec 21, 2005 #2


    User Avatar

    Staff: Mentor

    How about a 60Hz motor spinning a threaded rod, with the nut attached to your object? The constant angular velocity of the motor will give you a constant linear velocity at the travelling nut. It's not a constant acceleration, but a constant force, which is opposed by a frictional force in your experiment, I would guess....
  4. Dec 21, 2005 #3
    Thank you, greatly appreciated. This is due tomorrow you just helped me out a great deal. thanks
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook