Question

The nuchal ligament in a horse supports the weight of the horse’s head. This ligament is much more elastic than a typical ligament, stretching from 15% to 45% longer than its resting length as a horse’s head moves up and down while it runs. This stretch of the ligament stores energy, making locomotion more efficient. Measurements on a segment of ligament show a linear stress-versusstrain relationship until the stress approaches 0.80. Smoothed data for the stretch are shown.

The segment of ligament tested has a resting length of 40 mm. How long is the ligament at a strain of 0.60?
A. 46 mm
B. 52 mm
C. 58 mm
D. 64 mm

Stress (N/m?)
6.0x10-
4.0x10
2.0x10-
0+
0.20 0.40 0.60 0.80
Strain
FIGURE P8.69
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Transcribed Image Text

Stress (N/m?) 6.0x10- 4.0x10 2.0x10- 0+ 0.20 0.40 0.60 0.80 Strain FIGURE P8.69

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