2007-10-16 19:35:55 · 7 answers · asked by Raian Razal 3 in Science & Mathematics ➔ Physics
NO
Frictional force can not be greater than the normal force. The interaction that causes the normal force is what causes the frictional force. At the microscopic level all objects are rough. Where these grooves catch each other causes friction. The more the grooves are pushed together, normal force, the harder it is for them to slide along each other(friction).
2007-10-16 19:38:35 · answer #1 · answered by I have 0 characters to work with 3 · 0⤊ 1⤋
YES!
Having a coefficient of friction that is > 1 doesn't mean that the object is moved by friction alone.
It just means that you have to push much harder to get it to move. I guess that if it is > 1, it would probably be easier just to pick the object up to move it.
EDIT:
I think that a tennis ball on velcro would be more like a bunch of tiny little tension forces holding it back.
2007-10-17 02:46:46 · answer #2 · answered by elastic 2 · 1⤊ 0⤋
You can make it anything you want by structuring the surfaces like a sawtooth. Depending on how deep and steep the teeth are, the coefficient of friction can be made very large, essentially to the point where the material gets destroyed before anything moves.
2007-10-17 02:54:24 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Wow. Never thought of it, until I went to *theme music* ....Wikipedia!! which says: Coefficients of friction range from near zero to greater than one - under good conditions, a tire on concrete may have a coefficient of friction of 1.7.
2007-10-17 02:43:34 · answer #4 · answered by lolo 2 · 1⤊ 0⤋
Yes. For example, "Rubber in contact with other surfaces can yield friction coefficients from 1.0 to 2." [wikipedia]
Actually VERY smooth surfaces can have some of the highest coefficients of friction, for example, take two, clean, new CD's, place them recording side to recording side. You'll find that even the slightest pressure makes them stick solidly to each other.
2007-10-17 02:42:51 · answer #5 · answered by supastremph 6 · 1⤊ 0⤋
so what about a tennis ball on say, a floor of velcro?
2007-10-17 02:45:33 · answer #6 · answered by Kevin 5 · 0⤊ 0⤋
No.
2007-10-17 02:38:52 · answer #7 · answered by Madhukar 7 · 0⤊ 1⤋