Current Attempt in Progress

A small ball is attached to one end of a spring that has an unstrained length of $0\mathrm{.}270$ m $.$ The spring is held by the other end, and the ball is whirled around in a horizontal circle at a speed of $4\mathrm{.}98\frac{m}{s}.$ The spring remains nearly parallel to the ground during the motion and is observed to stretch by $0\mathrm{.}0170$ m $.$ By how much would the spring stretch if it were attached to the ceiling and the ball allowed to hang straight down, motionless?