Frecare de alunecare
Ft=Ff
N=G=mg
Ff=mN=mmg
m=Ff medie/mg=0,663/(0,402*9,8)=0,663/3,9396)=0,168
m alunecare=0,168
Frecare de rostogolire
m=Ff medie/mg=0,049/(0,402*9,8)=0,049/3,9396)=0,012
m rostogolire=0,012
m alunecare/ m rostogolire = 97.3