(8 pt) One end of a spring is attached to a wall. A 28 N pull on the other end causes the spring to stretch by 3.2 cm. a) What is the spring constant? b) How much work needs to be done to the spring in order to compress it by 3.2 cm?

(8 pt) One end of a spring is attached to a wall. A 28 N pull on the other end causes the spring to stretch by 3.2 cm. a) What is the spring constant? b) How much work needs to be done to the spring in order to compress it by 3.2 cm