Fig. 2: Frictional characteristics for MLB ball under each application condition.
From: Effect of grip-enhancing agents on sliding friction between a fingertip and a baseball
a–f Relation between the horizontal force Fy_μmax and normal force Fz_μmax at the instant of each maximum value of the friction coefficient µmax for each participant (with different plot color) under each application condition for MLB ball. No application with seam (a), rosin application with seam (b), sticky substance application with seam (c), no application without seam (d), rosin application without seam (e), and sticky substance application without seam (f). g–l Relation between µmax and normal force at µmax under each application condition for MLB ball. No application with seam (g), rosin application with seam (h), sticky substance application with seam (i), no application without seam (j), rosin application without seam (k), and sticky substance application without seam (l).
