2. A person with a mass of 85kg, stands on their tip toe one foot and has the following three forces acting on their foot. The tension in the Achilles tendon is 170ON when they are standing on their toes on one foot and the normal reaction force on their toes is 850N. The femur may be treated as a cylinder with length 420mm and a diameter of 32mm. The Young's modulus of the bone in compression is 9GPA. a) What is the change in length of the femur in this position? b) What is the strain energy density of the femur in this case? c) What is the total energy stored in the femur?

2. A person with a mass of 85kg, stands on their tip toe one foot and has the following three forces acting on their foot. The tension in the Achilles tendon is 170ON when they are standing on their toes on one foot and the normal reaction force on their toes is 850N. The femur may be treated as a cylinder with length 420mm and a diameter of 32mm. The Young's modulus of the bone in compression is 9GPA. a) What is the change in length of the femur in this position? b) What is the strain energy density of the femur in this case? c) What is the total energy stored in the femur?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A HOMEWRK-1: The average cross-sectional area of leg 3 cm² and all of body weight 700 N supported of this leg, and the amount of shorting (AL) = 0.15 mm find the length of this leg in meter if you know that young's modulus of the bone is 1.8 * 1010 N/m². ANSWER L = 1.157 m L? A--3X1=4 F. 100 $t015 u Javi
A wire of 0.5 mm cross-section diameter and 120 cm length is suspended vertically. What is the vertical force required to stretch it on its lower edge so that it becomes 121.2 cm long knowing that the Young's modulus of the wire material is 1.4 * X10^10N/m2
During a tensile strength experiment, a small diameter fibre is elongated by a force of 0.0250 N. The fibre has an initial length of 0.200 m and stretches 4 x 102 m. Determine the diameter of the fibre? The Young's modulus for the material being tested is 7.60 x 1010 Pa.
A copper wire 4.2 m long stretches .20 cm when a force of 410 N is applied. Determine the diameter of the circular wire. Young Modulus for copper is 11 x 10^10 N/m^2
Humans can bite with a force of approximately 796 N. If a human tooth has the Young's modulus of bone, a cross-sectional area of 1.1 cm2, and is 1.9 cm long, determine the change in the tooth's length during an 7.96 ✕ 102 N bite. m
Assume that if the shear stress in steel exceeds about 4.00 x 108 N/m², the steel ruptures. (a) Determine the shearing force necessary to shear a steel bolt 1.40 cm in diameter. IN (b) Determine the shearing force necessary to punch a 1.25-cm-diameter hole in a steel plate 0.550 cm thick. N
A steel wire, 3.0 m long, has a diameter of 1.0 mm. If a 10 kg load is hung from the wire how far will it stretch? Young's modulus for steel is 2.0 × 10^11 pa
A 2m long, 1mm diameter wire is suspended from the ceiling. Hanging a 4.5kg mass from the wire streches the wire's length by 1mm. What is the Young's modulus for this wire? I just need teh answer please.
An amusement park ride consists of airplane-shaped cars attached to steel rods. Each rod has length 15m and cross-sectional area 8.00cm2. Take Young's modulus for steel to be Y=2.0×1011Pa. How much is the rod stretched (change in length of ΔL) when the ride is at rest? Assume that each car with two people seated in it has a total weight of 1900N. When the ride is operating, it has a maximum angular speed of ω=8.0rev/min. How much is the rod stretched then?
A 16.3 cm long tendon is found to stretch 2.11 mm when a force of 18.8 N is applied to it. If the tendon is round and as an average diameter of 5.13 mm, calculate the Young's modulus of this tendon.
6. A) A 100-kg load is hung on a wire of length 6.00-m, diameter 2.00-mm, and Young's modulus 8.00 x 1010 N/m². What is its increase in length?
A 5.73 kg pipe is hung from a steel wire that is 2.96 long and has a diameter of 0.839 mm. Young's Modulus for steel is 2.0x1011 N/m². By what distance does the wire stretch? Give your answer in millimeters.