Date : October 25, 2005
Aim : To determine the coefficients of static friction and kinetic
Name : Marja A. Copeland
Lab partner : Sarah Tibby
FRICTION, TENSION, PULLEYS MASS
Experimentation, repetition, failure, success,
Hanging masses after masses we tried our best.
Coefficients big, coefficients small,
Doing trial after trial, we did it all.
Mass one, mass two were names we gave,
To these strange objects we had to manipulate.
Two hundred grams, four hundred grams, five-fifty, and then six,
To get the coefficients we tried all the tricks.
Friction, tension, pulleys, mass,
Normal force equals mass times acceleration, imagine that.
Acceleration due to gravity is nine point eight
The coefficient of static friction we need to calculate.
Dividing six-eight-six by five-eight-eighty gave point one
That’s the coefficient of static friction but we’re not done
One answer down, one answer still to get,
We keep adding masses; we’re not there as yet.
The object moves, then it stays in place,
If it keeps moving we’ve won this race.
Four-ninety divided by six-eight-sixty giving zero point zero seven
Finally! The coefficient of kinetic energy, after what, trial eleven?
After struggling with friction, tension, pulleys, mass
Normal force still equals mass times acceleration, imagine that.
Marja A. Copeland