This
animation illustrates a bar placed on a fixed point with its centre
of gravity
over the fixed point. Weights may be suspended along the bar at various
distances
right and left of the fixed point (every 10 cm). All weights are equal
(1.0 N), however,
the moment produced differs according to their exact location and
the bar tips in
one direction or the other depending on their position with respect
to the fixed
point. The mouse may be used to add, delete or move the weights along
the bar
and thus modify the balanced state of the moment, independent of the
weights
themselves. |
|
1998 
