- #1
freemind
Hello,
I'm stumped about a relatively simple problem. Here it is in its exact form:
"You need a rectangular prism with its height at least several times greater than its length. Put this prism vertically on a table or any other horizontal plane. How does one determine the coefficient of friction between the prism and the plane using only a ruler as a measurement equipment? You can use any facilities for the goals other than measurements."
Now, two things. First, it is not stated which coefficient to find (static or kinetic) and secondly, i don't know what to make of the last statement. How does one measure the coefficient of friction w/out "making any measurements". (I'm ignoring that sentence for now)
Anyway, my idea is to position the prism at a certain point and lift the table, measure the height at one end and see how far it slides. Yet, i have the feeling that it would be smarter to use the refractive properties of the prism itself to measure the coefficient. I have no clue how to do that.
Please try to destroy or append to my ideas.
Thanks
I'm stumped about a relatively simple problem. Here it is in its exact form:
"You need a rectangular prism with its height at least several times greater than its length. Put this prism vertically on a table or any other horizontal plane. How does one determine the coefficient of friction between the prism and the plane using only a ruler as a measurement equipment? You can use any facilities for the goals other than measurements."
Now, two things. First, it is not stated which coefficient to find (static or kinetic) and secondly, i don't know what to make of the last statement. How does one measure the coefficient of friction w/out "making any measurements". (I'm ignoring that sentence for now)
Anyway, my idea is to position the prism at a certain point and lift the table, measure the height at one end and see how far it slides. Yet, i have the feeling that it would be smarter to use the refractive properties of the prism itself to measure the coefficient. I have no clue how to do that.
Please try to destroy or append to my ideas.
Thanks