Bowden, F.P.: Friction between ski and snow. New Scientist 376, 275- 279 (1964)Nachbauer, W.; Kaps, P.; Hasler, M.; Mossner, M. Friction between ski and snow. In The Engineering Approach to Winter Sports; Braghin, F., Cheli, F., Maldifassi, S., Melzi, S., Sabbioni, E.,...
Chapter 2 Friction Between Ski and Snow The first skis were developed to improve locomotion across the natural, wind packed snow surface in the European northern countries. The skis were made of ... W Nachbauer,P Kaps,M Hasler,... 被引量: 0发表: 2017年 G230013 Behavior of Friction bet...
There is speed enhancement of approximately 9 % on artificial snow and 2 % on fresh alpine snow. The latter value is highly significant as it can be the difference between winning a medal in ski competitions and finishing outside the top ten. In addition to the quantitative data, qualitative...
Effect of Different Bearing Ratios on the Friction between Ultrahigh Molecular Weight Polyethylene Ski Bases and Snow The purpose of this study was to analyze the effect of surfaces with different bearing ratios, but similar roughness heights, on the friction between ultra... S Rohm,C Knoflach,W...
EXERCISEAskierofmass80kgisinlimitingequilibriumonaslopeinclinedat7?tothehorizontal.(a) themagnitudesofthefrictionalforceandthenormalreaction. (b) thecoefficientoffrictionbetweentheskiandthesnow.Modellingtheskierasaparticle,find7? 7?EXERCISESolution:mass:80kg80gRFr(b)Limitingequilibrium?Fr-80gsin7?=0?Fr=95...
From friction between snow and waxed ski bases it is known that at low temperatures, harder waxes which prevent from snow crystal penetration (and produce more frictional heat) are needed for the enhancement of the liquid-like layer formation and the corresponding achievement of higher sliding ...
Friction theory with calculator and friction coefficients for combinations of materials like ice, aluminum, steel, graphite and many more.
aInduced by U.S demostic political factors,the recent friction between U.S and china poses a serious threat to the world economy,experts said. 由美国demostic政治因素导致,最近摩擦在美国之间和瓷形成一个严重的威胁世界经济,专家说。[translate]
Ski’sonthesnow Cartyre Brakesonabike Wateronaslide Pencilandrubber Howcanwereducethefrictionbetween2objects?•Reducethecontactareabyusingrollers/ball-bearings/wheels•Changethesurfacesofthematerialsthataretouchingbyusinglubricationeg.Oil•Createacushionofair Eg.Likeahovercraftorairhockeytable “Fluid”...
An apparatus and method for adjusting the friction between a slide such as a ski and a responsive material such as snow by heating or cooling a portion of the material to change the material's coefficient of friction is disclosed. The apparatus includes a slide, a power source, and a ...