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!

Ttorque angular acceleration units check

  1. Jul 19, 2015 #1
    Given :

    A (hypothetical) wheel with a m.o.i. of 1 lb*ft^2

    Radius of wheel = 1.9099 inches, therefore circumference of wheel = 1 foot

    The wheel is at rest, i.e. zero rotation speed.

    A torque of 1 ft/lb is applied for 1 second

    Is the result a rotation of 1 r.p.s. (60 r.p.m.) ?

    Last edited: Jul 19, 2015
  2. jcsd
  3. Jul 19, 2015 #2


    User Avatar
    Science Advisor

    If you are working in the system of U.S. customary units then you should carefully distinguish between pound-mass and pound-force. I see at least two problems with your result. Let's start with the easier one: What acceleration is produced when one pound force acts on one pound mass?
  4. Jul 19, 2015 #3
    Sorry, I meant to write the initial rotation of the wheel is zero (at rest).

    Does that make a difference ?
  5. Jul 19, 2015 #4


    User Avatar
    Science Advisor

    It would make a difference. But It seemed clear that we were to assume a start from rest anyway.

    Again, what acceleration would you expect from a one pound mass subject to a one pound force?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Discussions: Ttorque angular acceleration units check
  1. Angular Acceleration (Replies: 6)

  2. Angular acceleration (Replies: 1)

  3. Angular acceleration! (Replies: 2)