Abstract
Reducing friction is an unending challenge in winter sports. Decisive improvements in sport equipment hinge on a precise prediction of resistance forces; the dynamic sliding friction-coefficient at low speed is still unclear and hampers progress. Two approaches disclosed changes in the coefficient-of-friction: two numerical models and an experimental model. We obtained accurate experimental data on the resistance coefficients from timing sensors on an ice track and a small accelerometer on the skeleton. A comparison of acceleration from the accelerometer with a numerical model showed a transition from static friction to kinetic friction, as “stick and slip” faded at 6 m/s. Speed and acceleration from this new approach will facilitate further investigations on sliding in bends on the ice track.
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