2006-11-26 04:10:17 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Physics
friction is opposing force which opposes motion of body
accrding to new studies fiction force exists due 2 the molecular interaction (forces) b/w surface and body
u can see here that more the roughness more the interacction b/w 2 bodies
hence more fri. forc. hence more force is required 2 move body
2006-11-26 04:17:12 · answer #1 · answered by n nitant 3 · 0⤊ 0⤋
It is harder to push an object on a rough surface than a smooth one because you have to overcome the frictional forces between the object and the surface since they are opposing your pushing force. Thus to make the object move you have to push harder than the frictional forces. The stronger these frictional forces are then the harder you have to push.
Of course we know from experience that objects push easier over smooth surfaces than rough surfaces so the frictional opposing forces must be greater the rougher the surface gets.
2006-11-26 04:48:39 · answer #2 · answered by TCay G 2 · 0⤊ 0⤋
The rougher surface has more friction and the friction has to be overcome before the object will move at all
2006-11-26 04:42:04 · answer #3 · answered by rosie recipe 7 · 0⤊ 0⤋
coz the rougher the surface, the more the irregularites it has on it and the more the friction the surface provides to a body moving on it. therefore, for the body to actually move on such a rough surface, more force is needed to overcome the friction
2006-11-26 04:49:08 · answer #4 · answered by amandac 3 · 0⤊ 0⤋
first of all that is mass X ACCELERATION that equals tension (F = Ma), not X velocity as one answerer positioned it. for that reason, if F = Ma, and we double the mass to 2M, the tension will become 2F = 2Ma; so it would take double the tension (the 2F) to go (strengthen up) that doubled mass on the comparable cost of acceleration. on the different hand, we could double the mass and save the tension the comparable F as in the previous. What might ensue then? If F' = 2Ma', then a' = F'/2M and the unique F = Ma; so as that a = F/M. to evaluate the a' and a accelerations and discover out what the hot acceleration (a') may be if we saved the comparable tension, we do a ratio a'/a = (F'/2M)/(F/M) = (F/2M)/(F/M) = one million/2. Then a' = a(one million/2); in different words, if we double the mass and save the tension at F, the hot acceleration (a') would be one million/2 the fee of the previous acceleration (a). The lesson to benefit right here is that the tension is proportional to the mass of an acclerating physique. additionally word that it rather is in actuality mass, not weight, we are talking approximately right here. ultimately, word that the path of the acceleration and of the tension inflicting that acceleration is interior the comparable path.
2016-12-17 16:31:48 · answer #5 · answered by ? 3 · 0⤊ 0⤋
Imagine a rough mountainside,and you on a bicycle.You go up,have to pedal harder,then you bump on down,easy..but next upward climb is hard pedaling again.Now imagine a freeway...flat and smooth,hardly any pedaling...the resistance of the "ups" requires more force,right?So there you go.A sea with high waves gives similar resistance,or a gravelroad compared to a blacktop...hope this helped.
2006-11-26 04:16:24 · answer #6 · answered by Flowergirl 2 · 0⤊ 0⤋
More friction! Small vectors pushing against the overall force vector. rougher the more force pushing against it.
2006-11-26 04:13:58 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Friction.
A rough surface causes more friction.
Friction makes it harder to move an object on that surface.
2006-11-26 04:13:43 · answer #8 · answered by DadOnline 6 · 1⤊ 0⤋
friction on the ground.
2006-11-26 04:13:53 · answer #9 · answered by jimmywalls1982 3 · 0⤊ 0⤋