The compressive strength of our bones is important in everyday life. Young\'s mo

Question

The compressive strength of our bones is important in everyday life. Young's modulus for bone is approximately 14.0Gpa . Bone can take only about a 1.00% in its length before fracturing. If Hooke's law were to hold up to fracture. Part A What is the maximum force that can be applied to a bone whose minimum cross-sectional area is 3.00cm2 . (This is approximately the cross-sectional area of a tibia, or shinbone, at its narrowest point.) = N Part B Estimate the maximum height from which a 70.0kg man can jump and not fracture the tibia. Take the time between when he first touches the floor and when he has stopped to be 2.80

Explanation / Answer

E = stress/ strain A) strain = 0.01 E = 14*10^9 Pa stress = E*strain = 14*10^7 Pa Force = stress* area = 14*10^7 * 3*10^-4 = 42*10^3 N = 42 KN =42000 N B)v^2 = 2*g*h a = v/(2.8*10^-2) F = ma = 42000 N a = 42000/70 v= 42000*2.8*10^-2 /70 = 16.8 m/s h = v^2/2g = 14.4 m

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.