Question
To obtain the least stress apply a small force spread over a large area apply a small force spread over a small area apply a large force spread over a large area apply a large force spread over a small area A 1 cm long section of the Achilles tendon stretches to 1.005 cm when it is subjected to a tensile force of 20,000 N. what is the strain in this segment of tendon? 50% 100% 5% 0.5% 0.005% A 1 cm long section of the Achilles tendon is 1 cm square in cross section. What is the stress in this tendon if it is subjected to a tensile force 20,000N? 20,000pa 20 Gpa 0.20 Gpa 200 N/cm2 2000N/cm when a stretched material does not return to its original shape, it has entered the region. elastic plastic refractive porous stiff when a stretched material returns to its original shape, it has remained in the region. elastic plastic refractive porous stiff
Explanation / Answer
1. stress = force/area => to get least stress, apply a small force over large area.
2. strain = dL/L = (0.005/1)*100 = 0.5 %
3. stress = force / area = 20000*10000/1 = 0.2 GPa
4. plastic
5. elastic