Experiment -Testing the
principle of moments
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1. Balance the ruler carefully at
its midpoint. If necessary, you
can add a blob of plasticine to
one side until the ruler balances.
2. Then add weights as shown.
Move one of the weights until the
ruler balances.
3. Measure the distances, and
record your results in a table.
4. Do this several times, with
different weights and different
distances.
Anti-clockwise
Force
F
(N)
Distance
d
(cm)
Moment
Fxd
(N cm)
Clockwise
Force
f
Distance
D
(cm)
Moment
fxD
(N cm)
Experiment -Testing the
principle of moments
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What did you notice about
the anticlockwise moment
and the clockwise
moment?