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we need more force to push a chair with bag  because the more weight  the more friction happens that's why it is difficult to push a chair with bag

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Friction is usually greater when an object moves on a rough surface than on a smooth  surface .
For example:
when we push a chair on a smooth surface it takes less force to push. when we push a chair on a rough surface is is harder to push because friction usually happpens on rough surfaces

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Friction increases on rough surfaces than smoother surfaces. for example a wheel chair can easily move on smoother surface than rough surfaces like rocks.

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Friction increases on rough surfaces than smoother surfaces. for example a wheel chair can easily move on smoother surface than rough surfaces like rocks.

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When the chair was moved on the smooth surface like a wooden floor it moved easily because the friction was less.  When the chair was moved on a rough surface like carpet it requires more effort because the friction was very high.
When the chair was moved without the school bag it required less force to move because of less friction. When the chair was moved with the school bag on it required more force because the higher the weight the higher the friction gets.

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I understand that on rough surface there is more friction and on smooth surface there is less friction

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1. Chair moved on a smooth surface, like marble floor, is easily moved because of less friction. When same chair is moved on a rough surface, like carpet, more force need to be applied to pull it because of greater friction.
It shows that smoother the surface the lesser the friction and the rougher the surface the greater the friction.

2. Chair pulled without a school bag is easily pulled because of less friction . More force need to be applied to pull the same chair with a school bag on it because of greater friction.
It shows that the more the weight the greater the friction.

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I understand by observing the chair in a smooth place and rough place. At the smooth place it takes less force but at the rough place it takes a lot of force and it moves very slowly.

FROM: YOUSIF NADEEM M.RAFIQ

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Forces of motion
i have notticed that if you move a chair on a smooth surface it is easy to push the hair and it was hard to push the chair in a thebrough surface  the same was with the bag experiment

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Topic: Friction and it's effect on motion;
When i moved Chair on Carpet, which was a rough surface, it was hard to move on the other hand it was easy to move on smooth surface.
Similarly whe i put my school bag on the chair it became more heavier due to high friction.

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When i pushed the chair on a smooth surface, there was less friction but when i moved it on a rough surface (carpet), there was more friction. Then i moved the chair without a heavy bag, the friction was less but when i moved it with a heavy bag, the friction increased. I have concluded that friction is more on a rough surface and the greater the weight, the more the friction.

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I realised there was more friction with the bag on it

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i have performed this experiment and i found out that there was more friction when my school bag was on chair as compared to the empty chair. it means that more friction is produced when weight is increased. 

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i have performed this experiment and i found out that there was more friction when my school bag was on chair as compared to the empty chair. it means that more friction is produced when weight is increased. 

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When i moved the chair on a smooth surface it easy in both the ways  hashir mehmood

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Hashir mehmood
Forces and motion
When i moved the the rough tiles in my garage it took more force to move it and when i put a bag on the chair it became very hard to move the chair

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When i moved the chair on the smooth surface, it moved fastly due to less friction but on rough surface it moved slowly due to more friction. In addition, when i moved the chair without bag, it was easier to move than with a bag on it due to weight of the bag.

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Hamza Saqib
1 When I moved the  chair  on rough surface it takes more  force because there is more friction between two surfaces
and when  I drag the chair on  smooth surface it takes less force due to les  less friction .
2 When I moved the chair with my bag it takes more force and when i moved the chair without my bag it took less
Force because the chair with bag has more weight and so more friction than the chair without bag

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when I drag the chair on smooth
surface it was easy to drag.but when i dragged it on rough surface it became difficult to drag .i observed that rough surface has more friction than smooth surface.

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Azan Faisal
I observed  that when i moved the chair on smooth surface it was easy to move it and there was less friction and when i placed the bag on the chair and moved on rough surface it was difficult  to move because  it was  heavy  with more weight

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It was easy to move the chair without bag but when I put bag on chair it was difficult to pull the chair and it requires more force 

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It was easy to move the chair without bag but when I put bag on chair it was difficult to pull the chair and it requires more force 

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when we drag a chair on smooth surface it needs very less friction and when we move a chair on a rough surface it needs more friction to move.

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when we move a chair on a smooth surface it needs very less friction to move it and if we drag a chair on the rough surface it needs more friction to move.

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When we drag a chair on smooth surface it is possible to move but on the other hand it is hard to move on rough surface

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When I moved the chair  on the rough surface it took a few force and when I put a bottle and pulled it back and it took more force than before
Ibrahim Mustafa 4 Green

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I observed that when I moved the chair on smooth surface it was easy to move due to less friction offered and when I moved the chair on rough surface it was hard to move it due to more friction and when I placed the bag on chair it was hard to move chair due to more weight

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I Observed that if we drag the chair on a smooth surface there is less friction bcz it is easy to drag while on Rough surface it is hard bcz there is more friction.If we put bag on the chair weight of the chair increase and its hard to move and more friction is required.

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I got the result, smoother the surface lower the friction n movement fast, rougher the surface, greater the friction n movement slow, same with the case of weight. More weight more friction slow movement, less weight less friction fast movement.

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When I moved the chair on the smooth surface it was easier to move because smooth surface has less friction. When I moved it on a rough surface I was facing difficulty, So when I dragged on the rough surface with school bag it took more difficulty so that means greater the object greater the friction.

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When i move chair in smoth  surface it was easy when i move chair in rogh surface it was difficult.
Ayan Asad

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Rafay bilal
When I dragged the chair on the carpet (rough surface) there was a lot of friction which made it difficult to pull the chair. It was much easier to pull the chair on the floor (smooth surface).
Also pulling the chair with my bag on it was more difficult; the weight of the bag causes gravity to act on it making the chair heavy; this leads to more resistance when pulling the chair and so more friction.

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When I move chair on smooth surface it was easy to move because of less friction
When I move chair on rough surface so I was facing difficulty to move because of more friction
When I move  chair without school bag, it was easy to move but when I try to move the chair with the school  bag it got heavier and difficult to move

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Type of surface affects friction.when I move the chair on rough surface the friction increased when I move the chair on smooth surface it easily moves. During second experiment the weight of an object also affects the friction. From Muhammad sameer cheema

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When I move a chair on smooth surface it was easy while
When I move a chair  on rough surface it was  difficult to move because the type of the surface affects friction. The roughest the surface the greater the friction. When I put a  bag on the chair to move  it was bit difficult to mov because the weight of an object affect friction.the greater the weight, the greater the friction.

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The type of surface effects friction when pulled the chair on rough surface the friction increased.
The weight of an object effects friction with the bag the friction was great and without the bag it was
easy to move and less friction

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When I move the chair on a smooth surface it easily moves but at the same time when I move the chair on the rough surface it has more friction and it cannot move easily. ON the other hand, when we put a school bag on chair friction is an increase, and the chair cannot move easily.

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it was easy to drag chair on smooth surface because their is less friction and difficult to drag chair with bag on rough surface because there is more friction on rough surface.

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It was easy to  drag chair on smooth surface and  took less friction and it was difficult to move a chair on rough surface and took more friction.
it took more force to move a chair with a bag and it was easy to move a chair without bag

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I observe that it is easy to move a chair on smooth surface due to less friction and we need less force to move it on the floor whereas more friction is faced while moving a chair on rough surfaces.
And we need more force to move a chair having a bag on it than a chair without any bag on it.

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I realized its easy to drag chair on a smooth surface rather then on rough surface.same when we will put a bag on a chair and while dragging it on a rough surface it will  take more power and friction would be higher.

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It was easy to drag a chair on a smooth surface  but it wasnt easy dragging on a rough surface as it has less friction.

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Ans 1:
I observe that it is very easy to move a chair on a smooth surface. On the other hand , it is very difficult to move the chair on rough surface because if high friction and there is less friction on sfriction on ssmooth surface.
Ans 2:
I have learned that when we place a bag on a chair it requires more force  to move the chair.

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Mahad umer 4 red.1 we can easily move chair on smooth area because it has less friction on surface it will be more friction 2i observed that the chair on hard surfaces it take more power and friction

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1.we can easily move chair on smooth area because it has less friction on rough surface it will be more friction.2i observed that the chair on hard surfaces it take more power and friction

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I figured the chair will move easily on smooth surface because it has less friction and it is hard to move a chair on rough surface because it has more fiction.

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The chair will move easily on smooth surface by little force and on rough surface it is hard to move with more force.
The chair with bag will take more force to move and the chair without bag will easily move.

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experiment of friction

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When chair moves on smooth surface it requires less friction but it is hard to move chair on rough surface because friction is usually greater when an object moves on a rough surface than on a smoother surface.The types of surface affects friction.The rougher the surface the greater the friction.                                                   Move a chair without school bag requires less friction and move a chair with school bag on it requires greater friction. It means the weight of an object affects friction.The greater the weight ,the greater the friction.

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M.Shaheer

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When I moved chair on a rough surface I had  to use more force to move the chair. This is due to type of surface,which effects the friction. Since I was trying to move chair on rough surface I was facing greater friction and finding it difficult to move chair.On the other hand when I moved chair on a smooth surface I faced lesser friction and chair can be moved easily .So we can conclude the type of surface effects friction.More the surface more the friction .Then I put my school bag on the same chair and pushed it on smooth surface and found that it is difficult move the chair . It means the weight of an object effects the friction. More the weight more the friction .

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when we pull a chair on a smooth surface it is very easy because  there was less friction on the smooth surface on a rough surface  it was harder to move  because of the friction when i added a bag  the friction had increased like putting a lot of marbles in a ice cream tub this means that smooth surfaces have less friction and rough surfaces have more friction also the amount of objects added the amount of friction will also increase .

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When i pulled a chair on a smooth surface it was very easy to pull and when i pulled a chair on a rough surface it was hard to pull. When i pulled the chair on a smooth surface with a bag it was a little more heavy and when i pulled the chair on a rough surface by putting my bag on it,it was even more harder to pull it

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When I move chair in smoth surface it was easy when I move chair in rough surface it was difficult

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I have done the experiment that when we move the chair on the same surface it moves easily and but it will be hard to move on rough surface.
It will easily move on the smooth surface easily even with the bag, but it will be even more hard to move a chair on the rough surface with the bag.

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i learned that a chair moves easily on smooth surface. i also learned that it is hard to move a chair on rough surface. it is because there is more frition on smooth surface.and there is less friction on rough surface

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dragging chair on smooth surface.

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It was really easy to drag the chair on a smooth surface while it was a bit hard to drag a chair on a rough surface. But when I place a bag on chair it was easy for me to drag a chair on both of the surfaces

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I found that we can easily move a chair on a smooth surface because it has less friction and on the rough surface a chair cannot move smoothly as it has more friction. And in other experiment i found that if we keep a bag on chair and drag it requires more force and when we drag an empty chair it requires less force. By ghulam mustafa

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Dragging a chair without bag on it

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i found that we can easily move an  chair on a smooth surface beacause it has less friction and in the same way if we move a chair on rough surface so it will be hard because it has more friction

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miss i first drag the chair from one place to other it was easy and friction was less but when I put a bag on the chair and than drag it from one place to other it  was harder and the friction was more

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On the second experiment I observed it that when I put my school on the chair and drag it on a rough surface it's very hard to drag it because the rough surface has more friction. I almost fell down dragging it.

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miss i did the experiment and found that if we drag a chair on smooth surface it would be easier because it  has less friction and on  the rough surface it would be difficult because it has more friction

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miss i did the experiment and found that if we drag a chair on smooth surface it would be easier because it  has less friction and on  the rough surface it would be difficult because it has more friction

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Ma'am I did the the experiment and what I've found out is that if we drag a chair on a smooth surface it'll be more easier because it has less friction.

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 miss i did the experiment and found out that if we drag a chair on a smooth surface it would be easy because it has less friction and on rough surface it would be difficult  because it has more friction.

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 miss i did the experiment and found out that if we drag a chair on a smooth surface it would be easy because it has less friction and on rough surface it would be difficult  because it has more friction.

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After experiment I observed that the chair on smooth surface requires less force to move as compared to the rough surface because smooth surface has less friction as compared to the rough surface. In same way the chair with the bag requires more force to move as compared to the chair without bag because more the weight more the force is required to move the object.

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As you said I did the experiment and observed that if we move a chair on hard surface it takes more force .it is hard to pull . And takes more energy but on the other side if we move the chair on soft surface then it don’t take much force and we can pull it easily .The second experiment was fun and I enjoyed it. When i moved the chair with school bag on rough surface it again took a lot force but compared to other chair which was without bag on smooth surface was damn easy to pull like a normal chair so after this all I learned that weight and surface affects friction .

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During first experiment when i was doing this experiment , I observe when I was chair on smooth surface the chair wouldn’t more force and it is easy to drag on smooth surface but when I drag the chair on rough surface it was difficult drag smoothly.
During second experiment when I drag chair with bag on smooth surface it was taking more force but drag easily. When I doing same experiment on the rough surface it was so heavy and Can’t drag easily.
After this experiment I learned that weight and surface affects friction.

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When I move the chair on a hard surface it was hard to pull but when I move it on smooth surface it was easy to pull it.
When I pulled the chair without the bag, it was easy to do but when I pulled the same chair with the bag, it was difficult to do.

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It was really easy to drag the chair on a smooth surface while it was a bit hard on the rough surface as we needed to put more force. With the school bag it was a bit hard to move the chair on smooth surface and it was really hard on the rough and we needed much more force because the chair got heavier and it got hard to move it on a rough surface as well as on smooth surface(a little bit).

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We can easily trawl chair on smmoth surface and we have to apply more force to trawl chair on rough surface

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it was hard to drag it from the rough surface and it was easy to drag it from the smooth surface