The force required to stretch a Hooke's-law spring varies from 0 N to 78.8 N as...

 

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The force required to stretch a Hooke's-law spring varies from 0 N to 78.8 N as we stretch the spring by moving one end 19 cm from its unstressed position. Find the force constant of the spring. Answer in units of N/m. part 2 of 2 Find the work done in stretching the spring. Answer in units of J. The force required to stretch a Hooke's-law spring varies from 0 N to 78.8 N as we stretch the spring by moving one end 19 cm from its unstressed position. Find the force constant of the spring. Answer in units of N/m. part 2 of 2 Find the work done in stretching the spring. Answer in units of J.