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Calculate the work required to stretch the following springs 1.75 m from their equilibrium positions. Assume Hooke's
law is obeyed.
a. A spring that required 80 J of work to be stretched 0.2 m from its equilibrium position.
b. A spring that required a force of 250 N to be stretched 0.5 m from its equilibrium position.
dx
(Type exact answers.)
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a. Set up the integral that gives the work done in stretching the spring 1.75 m from its equilibrium position. Use
increasing limits of integration.
Fig: 1