What is the value of the rolling friction force given 1)Fnet=0.24N (deceleration up the ramp) and 2)Fnet=0.21N (acceleration down the ramp)?
Fnet = Fgravity - Ffriction (?)
The Attempt at a Solution
Somehow I need to combine these values to find the frictional force...
So I tried this:
0.24 = 5.0 - Ffric
0.21 = 5.0 - (-Ffric)
0.03 = -2Ffric
Ffric = 0.015 (disregarding the negative?)
Does this work?