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.

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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. Experiment -Testing the principle of moments

Anti-clockwiseClockwise Force F (N) Distance d (cm) Moment Fxd (N cm) Force f Distance D (cm) Moment fxD (N cm)

Experiment -Testing the principle of moments What did you notice about the anticlockwise moment and the clockwise moment?

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