Force/weight (N)

Free Length, L_f (cm)

Length Variations, L_i (cm)

L_f-L_i (cm)

0

17

17

0

5

17

16.5

0.5

10

17

15.9

1.1

15

17

15.5

1.5

20

17

14.9

2.1

25

17

14.5

2.5

30

17

14.0

3.0

35

17

13.5

3.5

40

17

12.9

4.1

45

17

12.5

4.5