Posted by **phys101!** on Wednesday, October 12, 2011 at 4:44am.

The force required to stretch a Hooke’s-law

spring varies from 0 N to 62.4 N as we stretch

the spring by moving one end 17.2 cm from

its unstressed position.

a) Find the force constant of the spring.

Answer in units of N/m

b) Find the work done in stretching the spring.

Answer in units of J

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