Pencil balancing

i saw this on youtube when i search for physics experiment for the exhibition on the coming saturday..
itis a simple physics experiment on centre of gravity..
i decided to try it out..and i did it..

you can try it too..


First, i need a pencil



a compass



pierce the pencil with compass..


and it become like this..


now i try to put it at the edge of the table..


my hand still there..


and i did it!the pencil not fall down and it balance well..



















different angle of the view..





and i try to put it on my finger..























and i want to make another one..
i replace the compass with a nail cutter..
please note that it is not necessary to use the compass.. we can use a knife too..
















yes.. it work well on the table..

and on the hand..


actually i want to put this 3 together..
and balance it..


and i did it.. haha..


please be careful when you pierce the pencil..
look at my finger.. =.=


Enjoy yourself with the experiment!