MATHEMATICAL ASSOCIATION OF AMERICA webwork / mth 162-k9 / pset6 / 24 pset6: Pro
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MATHEMATICAL ASSOCIATION OF AMERICA webwork / mth 162-k9 / pset6 / 24 pset6: Problem 24 Previous Problem Problem List Next Problem (1 point) a. Work of 2 Joules is done in stretching a spring from its natural length to 20 cm beyond its natural length What is the spring constant k 02 Don't forget to enter the correct units If the spring is stretched to the same distance (20 cm), what is the restoring force that pulls the spring back toward its equilibrium position? Restoring force = b. Don't forget to enter the correct units. Note: You can eam partial credit on this problem Preview My Answers Submit Answers You have attempted this problem 0 times You have uniimited attempts remalnin Email instructor ^Explanation / Answer
(a) work done by spring (W) = ½kx2
2 = 0.5 x k x (0.20)2
k = 2/(0.5* 0.04) = 100 N/m
spring constant (k) = 100 N/m
(b) Restoring force (F) = kx = 100 x 0.20 = 20N
F = 20 N
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