An object is placed in the pan on the left side of the balance. A student finds
ID: 2140334 • Letter: A
Question
An object is placed in the pan on the left side of the balance. A student finds that 18 plastic blocks placed in the pan on the right causes the balance to tip down on the right, while 17 causes it to tip down on the left.
Your challenge is to devise a method that can be used to determine the mass of the object to the nearest one-eighth of a block.
(Note: No chopping up the plastic blocks into smaller pieces!)
http://i.imgur.com/5AQ3Ljg.png
An object is placed in the pan on the left side of the balance. A student finds that 18 plastic blocks placed in the pan on the right causes the balance to tip down on the right, while 17 causes it to tip down on the left. Your challenge is to devise a method that can be used to determine the mass of the object to the nearest one-eighth of a block. (Note: No chopping up the plastic blocks into smaller pieces!)Explanation / Answer
put the lsr piece of plastic on the left side at the clots which is towads right. Both sides have been devided into 8 parts. Now shift the location of last plastic step by step towars right, at one location you will see that the balance will move dowm from left. That 17*weint of plastic + (8-n) * weight of plastic will be more accurate weight. (n is the position of slot from left end)