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!

Homework Help: The torque of rotating disc

  1. Mar 21, 2006 #1
    Hello All!

    I have one machine. The disc (Horizontal place) is rotating and connecting to the shaft which is connecting to gear box and ac motor.

    I would like to k now the torque of rotating disc for some interval such as 10s, 20s, 30s, to take reading , but I do not have money to buy torque meter.

    I would like to know can I use tachometer to take the rotation speed of rotating disc within interval, 10s per taking.
    And then I can use T= I x aplha to find the different time's torque reading

    Please advise me.
    Or could you please give me another ideas or suggestions?
    Thanks a lot.
    Last edited: Mar 21, 2006
  2. jcsd
  3. Mar 21, 2006 #2


    User Avatar
    Science Advisor

    That's an extremely rough way to do it. If you were to go that route, I would recommend that you reduce that 10 sec interval to less than a second. If you can sample the speed quicker, say 10 Hz or better, you will have a better resultant calculation of the torque, especially if you are trying to see the result of an applied load.

    Without proper instrumentation, I don't see how you're going to get any better results that easily.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook