Is the axis of rotation a line or a point?

[starburst]

Hi Guys so I would really appreciate if I could get some help with this question I have, I have a test in a couple days!

So we are learning about torque and there are a couple components of torque that I'm a bit confused about.

1. Is the axis of rotation a line or just a point?

2. Is the lever arm the shortest length b/t the "line of action" and the axis?

Thank you very much!

 

[Doc Al]

1. Is the axis of rotation a line or just a point?

A line.

2. Is the lever arm the shortest length b/t the "line of action" and the axis?

Yes.

You want to browse this site: http://hyperphysics.phy-astr.gsu.edu/hbase/torcon.html"