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March 2, 2015

March 2, 2015

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

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

- physics -
**drwls**, Wednesday, October 12, 2011 at 4:49ama) 62.4 N/0.172 m = 362.8 N/m

b) (1/2)*(max stretch)(max force)

= 0.5*0.172 m*62.4 N = ___ J

- physics -
**phys101!**, Wednesday, October 12, 2011 at 4:52amthank you for the help!!!

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