PASCO PS-2138 Goniometer - Manual (Page 10)

Goniometer Experiment
10 ®
4. Place a pen in your hand (as shown) so that
you will draw on the board while keeping
the back of your hand closest to the board.
5. Have a partner mark the location of your
elbow on the board, and measure the
distance from your elbow to the pen.
Distance from elbow to pen
Procedure
1. Fully extend your elbow and place the pen tip on the board.
2. Start data collection.
3. Draw an arc on the board by flexing your elbow. Move only your
forearm and hand, while keeping your elbow at the marked location on
the board.
4. Stop data collection.
It is important not to twist your hand in order
to allow your arm to rotate in a plane parallel
to the board.
Draw an arc by
flexing your elbow
Mark the
location of
your elbow
and keep it
stationary
q