A spring has a rest length $of10$ inches

and a force $of11$ pounds stretches

the spring $to$ a length $of15$ inches.

How much work $is$ done stretching the spring

force

from a length $of14$ inches $to$ a length

$of19$ inches?

Represent the amount $of$ WORK $asan$ integral.

Work $={\displaystyle \underset{a}{\overset{b}{}}}$

$dx$

$a=,$ inches

$b=,$ inches

Then evaluate the integral. Work $=$

inch$*pounds$