A cylindrically shaped piece of collagen (a substance found in the body in connective tissue) is being stretched by a force that increases from 0 to 3.06 10-2 N. The length and radius of the collagen are, respectively, 2.7 and 0.093 cm, and Young's modulus is 3.10 106 N/m2.
(a) If the stretching obeys Hooke's law, what is the spring constant k for collagen?(b) How much work is done by the variable force that stretches the collagen?