A muscle of 1cm2 cross section and 10.0 centimeter length is stretched to 11.0 centimeter by hanging a mass on it. The muscle behaves like a spring that follows Hooke's law. The Hooke's law constant for the muscle was determined by finding that the muscle exerts a force of 5.00 Newton when it is stretched from 10.0 centimeter to 10.5 centimeter. Determine the work and specify the sign of the work.