Amandla okungqubuzana kwe-Kinetic

Ukungqubuzana kwe-kinetic amandla okungqubuzana asebenza ebusweni bezinto ezithintana lapho izinto zihamba.
Uma ufuna ukuthola amandla okungqubuzana okungaguquki, sebenzisa isibalo 1.5 a. Uma ufuna ukuthola i-kinetic friction coefficient, sebenzisa isibalo 1.5 b.
Isithombe 2 sibonisa into edonswa njalo ukuze into ihambe ngesivinini esingaguquki. Uma ihamba ngesivinini esingaguquki, ubukhulu buka-f_k okulingana nobukhulu bamandla okudonsa (F).

UMthetho Wokuqala KaNewton uthi into ihamba ngesivinini esingaguquki uma amandla aphelele (amandla aphumelayo) elingana no-zero.
Isibonelo sezinkinga.
1. Ibhulokhi elingu-1 kg elibekwe endaweni eyisicaba liyadonswa kusetshenziswa i-dynamometer kuze kube yilapho ibhulokhi lihamba ngesivinini esingaguquki. Uma ubukhulu bamandla okudonsa aboniswe yi-dynamometer bungu-1 Newton futhi ukusheshisa okubangelwa amandla adonsela phansi kungu-10 m/s², nquma: (a) ubukhulu bamandla okungqubuzana kwe-kinetic (b) i-coefficient yokungqubuzana kwe-kinetic
Ingxoxo
I-Diketahui :
Isisindo sebhulokhi (m) = 1 kg
Ukusheshisa ngenxa yamandla adonsela phansi (g) = 10 m/s²
Isisindo sebhulokhi (w) = mg = (1 kg)(10 m/s²) = 10 kg m/s² = 10 uNewton
Ubukhulu bamandla okudonsa (F) = 1 Newton
Jawab :
(a) U-f omkhulu_k
Uma ibhlogo lihamba njalo noma lihamba ngesivinini esingaguquki, ubukhulu buka-f bungu-_k = ubukhulu bamandla okudonsa (qhathanisa isibalo 1.6)
Ngakho ubukhulu bamandla okungqubuzana kwe-kinetic (f)_k) = ubukhulu bamandla okudonsa (F) = 1 Newton
(b) I-Coefficient yokungqubuzana kwe-kinetic

Ireferensi