Pressures in the Body (Problem 77)

During heavy lifting, a disk between spinal vertebrae is subjected to a 5000-N compressional force. (a) What pressure is created, assuming that the disk has a uniform circular cross section 2.00 cm in radius? (b) What deformation is produced if the disk is 0.800 cm thick and has a Young’s modulus of $1.5\times {10}^9{\text{N/m}}^2$? Select the answer to part (a).