is "stickyness" part of the static friction? is it already integrated in coefficient of static friction μ or there is some special case where you put "coefficient of stickyness" in formula μ*N when things get sticky? I imagine peace of tape on some flat, relatively smooth surface. you have to pull it with relatively high amount of force in order to set it in linear motion. I suppouse area of that peace of tape also has some significance by means larger the peace of tape is larger the static friction would be?