Official Answer
Answer
Groove scalloped fooyya’iinsa dizaayinii yoo ta’u, boorri gara groove geessu xiqqoo kan ta’e ykn recesses addaan cite kan qabudha. Kunis gingilchaan ispiraalii yeroo inni boora gadi bu’u salphaatti akka dhiibamu taasisa. Gingilchaalee keessootiif, girgiddaan gara daayameetira xiqqaa boora caalaa ‘gadi madaa’uu’ qaba. Dizaayiniin iskaaloppii wal-nyaatinsa $F_f = \mu \cdot F_n$ gingilchaa fi dallaa boora gidduu jiru hir’isa, kunis yeroo stroke dhaabbii gingilchaan fuula siliindarii haayidiroolikii honed akka hin xuuxne dhorka.
