2007-03-01 22:05:53 · 3 answers · asked by Robert O 2 in Science & Mathematics ➔ Physics
You're confusing the coefficient of friction with the result obtained when that interacts on surfaces and generates heat. The speed of movement varies the amount of work being donw and that changes the heat output.
2007-03-01 22:10:43 · answer #1 · answered by Nightstalker1967 4 · 0⤊ 0⤋
This is an energy balance problem. The heat generated by rubbing your hands together is dissipated into your hands and convectively cooled by the surrounding air. The rate at which this dissipation/cooling occurs is a function of the temperature difference between the skin surface and the air or sub-layers of skin. The faster you convert work into heat the faster it must be dissipated which requires a greater temperature difference--voila, the skin surface has to get hotter.
2007-03-02 06:52:24 · answer #2 · answered by Dr.T 4 · 0⤊ 0⤋
because more resistance is occurring more frequently.
2007-03-02 06:20:25 · answer #3 · answered by alimoalem2000 2 · 0⤊ 0⤋