Problem 6: Rubber Band Redux The potential energy of a rubber band of relaxed length L...

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Problem 6: Rubber Band Redux The potential energy of a rubber band of relaxed length L when it is stretched to a length may be shown to be l U -k = 1 k ( 1 - 31 + 21 ). (3.60) where k is a constant. (a) Calculate the corresponding force (F) as a function of length. (b) Sketch the force versus length. (c) Show that the rubber band obeys Hooke's law for small extensions and determine the corresponding rubber band stiffness. Answer (a) F =- 1+k(1 - 4) Answer (b) F t (e) Explain why the force curve given by your answer to (a) and sketched in (b) is not in fact applicable to rubber bands under a compressive load. I need to know the answer of E. Would you explain it?| Problem 6: Rubber Band Redux The potential energy of a rubber band of relaxed length L when it is stretched to a length may be shown to be l U -k = 1 k ( 1 - 31 + 21 ). (3.60) where k is a constant. (a) Calculate the corresponding force (F) as a function of length. (b) Sketch the force versus length. (c) Show that the rubber band obeys Hooke's law for small extensions and determine the corresponding rubber band stiffness. Answer (a) F =- 1+k(1 - 4) Answer (b) F t (e) Explain why the force curve given by your answer to (a) and sketched in (b) is not in fact applicable to rubber bands under a compressive load. I need to know the answer of E. Would you explain it?|