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More than likely the surface is not level, and slightly lower towards your side, so effectively you are rolling the pencil uphill, gravity then causes it to roll back towards you. To the person who answered this. If you roll it in the opposite direction it will still roll back. try to do it now and anyway it doesn't just roll back but rolls there and back.
Wiki User
∙ 16y ago
Wiki User
∙ 16y agoWhen you push a pencil against a smooth surface it will continue to roll in one direction (it has now kinetic energy) until it stops (some of the kinetic energy has now been lost due to either heat, sound or it has been changed into potential) and then starts to roll in the opposite direction and then in the opposite direction then and so on until it looses its energt completely or in other words there and back. This happens because as it rolls friction and gravity slightly deform (you don't notice this because the deformation is microscopical) the object and its will to go back into the shape it was makes it move in the opposite direction. Eg. twist a rubber band and let go of one end. It goes back into the shape it was. More than likely the surface is not level, and slightly lower towards your side, so effectively you are rolling the pencil uphill, gravity then causes it to roll back towards you.
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Why do pencils have six sides?
Pencils have six sides because for the companies making them it's alot cheaper. You can make more six sided pencils from the same amount of wood than round pencils. For every 8 round pencils there would be 9 six sided pencils. Also they don't roll off of desks as easily. ------------------------------------------------------------------------------------------------ Also like honeycomb, hexagonal tubes stack very well in a box with no space left between them.
Do pencils fly?
no of course not they r pencils
Do they use lead or graphite for mechanical pencils?
Mechanical pencils, like the regular kind of pencils, use graphite.
Do pencils occupy space?
Yes, pencils do take up space.
Why do pencils break?
Pencils break because they are made of a substance called why the hell are you writing so hard and that's what makes pencils break
Why do pencils roll THERE AND BACK when you push them slightly on a STRAIGHT SURFACE that isn't inclined in any way?
This may not be true, or it could be static electricity.
Why are Hexagonal prism used in pencils?
So they don't roll off your desk.
Can a pencil roll or slide?
Yes, a pencil can roll or slide, because there are many types of pencils as well as they are in many shapes like triangle, geoid etc. Some kinds of pencils have figures attached with them.
Why do pencils have six sides?
Pencils have six sides because for the companies making them it's alot cheaper. You can make more six sided pencils from the same amount of wood than round pencils. For every 8 round pencils there would be 9 six sided pencils. Also they don't roll off of desks as easily. ------------------------------------------------------------------------------------------------ Also like honeycomb, hexagonal tubes stack very well in a box with no space left between them.
How are carpenter pencils better than regular pencils?
Carpenter pencils are better than regular pencils for a variety of reasons. The lead in carpenter pencils are strong and are able to withstand the stress of marking on hard surfaces. Carpenter pencils are also able to survive a construction environment such as being put into a bag accompanied by heavy tools. These reasons are why carpenter pencils are better than regular pencils.
Are caliber pencils good quality?
no, not at all. I have the pencils where you have to push out and put back in other end, and the eraser is the worst eraser I have ever encountered in my life.
Why do cats have an obsession with pencils and pens?
Its not the pencils and pens themselves, its the motion. When you write with a pencil or pen, the motion attracts the cat's attention and it wants to play. Obviously as you are wiggling the pencil or pen YOU are signalling the cat that you want to play, which makes the cat even happier... and that much harder for you to write...
Difference between roll back and commit in sql?
in sql commit is used for saving the changes made in database and roll back is to roll back them , changes will not get saved in the database
What is the name of clay in pencils?
Graphite duhhh go back to 7th grade! imrpovement: lead used to be used in pencils, but since it is poisonous they now use graphite.
What do you do if you keep running out of pencils?
If you buy so many pencils and keep them in a safe spot just take one a day if you stil have it put it back then repeat again and again until you run out the start again with some more pencils
What was one of the main concerns of the us in the cold war?
To contain Communism and roll it back. To contain Communism and roll it back.
Can eyes roll to back of head from use of epilepsy drugs?
Your eyes can roll to the back of your head when you have a seizure - it is not the epilepsy medications that do this.
