Adding the loads
Add 2 kg masses, one-by-one,
and measure the extension, l, at each stage
using the zoomed vernier scale.
• Record these values in your data sheet or lab book.
• Unload the wire to zero load and check the extension.
You will use them on the next page to plot a graph.
If you want more information on vernier scales and how to read them, then check out the
following external sites:
• Cornell University - Use the
vernier scale on the mechanical stage of the compound microscope to measure the size of an
object.
• NT Curriculum Project, University of Wisconsin - Madison - How
to read a vernier scale, including QuickTime movie.
• Networked Multimedia Information Services (NOMI) - The parts of
a pair of vernier callipers and how to read them.
• Noted Figures in Physics, Engineering and Astronomy - Find out more about Pierre Vernier, France
(1584-1638).
