A person attaches a spring to an cubic object that weighs 36kg and pulls this object along a table made of material X horizontally with a steady speed of 1.3m/s. The spring stretches a distance of 3.4cm. Find the ratio of the spring constant to the kinetic friction coefficient.
I suppose Fk=μkN
Not sure if any other ones are needed, but I couldn't find a way to solve this and get a reasonable answer.