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Fulcrum At (cm)
 Load at End of Ruler (g)
 Load distance (cm) (from fulcrum to load)
 Effort Force needed (newtons)
 Effort Force Distance (cm)
40
50
40
2.8 (N)
50
40
50
40
2.4
40
40
50
40
1.6
30
40
50
40
1.7
30
30
50
30
1.9
20
30
100
30
0.4
10
30
100
30
0.2
5





Fulcrum At (cm)
 Load at End of Ruler (g)
 Load distance (cm) (from fulcrum to load)
 Effort Force needed (newtons)
 Effort Force Distance (cm)
50
50
49
0.5 (N)
49
50
50
49
0.9(N)
40
50
50
49
1.3 (N)
30
50
50
49
1.7 (N)
20
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1. Compare the effort distance and the effort force in all trials. What happens to the amount of effort force as the effort distance increases? Use the terms “inverse” or “direct” in your answer.

The force goes UP when Effort Force Distance goes down


the effort 2.

What class of lever did this represent?


Extension
Design a similar experiment using a lever of a different class. Do your results change are they similar