Recent content by Breanne

Thank you both for your help. after following the above friction link I found the equation for work done by friction: W= ∫ μK N ds I did not know what two of the variables represent and went to my teacher for help. She told me not to use this equation because I haven't taken calculus. I still...

Thank you for the help, the links where especially useful :)

Homework Statement I am trying to calculate the speed and force needed to make a marble complete a loop in the rollercoaster that i have been instructed to make. I do not know how to calculate f though. I can not use v=d/t because I can't find time until the rollercoaster is built which I...