physics please help
posted by dan on .
The femur is a bone in the leg whose minimum cross-sectional area is about 3.60 10-4 m2. A compressional force in excess of 6.90 104 N will fracture this bone.
(a) Find the maximum stress that this bone can withstand.
(b) What is the strain that exists under a maximum-stress condition
(a) Stress = Force/Area
= 6.90 10^4/3.60 10^-4 m2
= ___ N/m^2 (or Pascals)
(b) You need Young's modulus (E) for bone material. You will have to look it up. It probably varies with type of bone and the person's age.
Strain = Stress/E