Ukungqubuzana okuqinile amandla okungqubuzana asebenza ebusweni bezinto ezithintana lapho izinto zingashukumi.
Isithombe 1 sibonisa into engashukumi endaweni eyisicaba edonswa ngamandla F. Uma into ingashukumi khona-ke u-f s mncane kunamandla okudonsa (F). Uma amandla okudonsa ekhuliswa khona-ke into izohamba. Lapho into isizohamba, ubukhulu buka-f s bulingana nobukhulu bamandla okudonsa (F).
UMthetho Wokuqala KaNewton uthi into iphumula uma amandla aphumayo noma amandla aphelele elingana no-zero.
Uma ufuna ukuthola i-static friction coefficient, sebenzisa i-equation 1.1 b
Uma into isizohamba, ubukhulu bayo amandla amakhulu okungqubuzana okungaguquki okulingana nobukhulu bamandla okusunduza noma okudonsa.
Isibonelo sezinkinga.
1. Ibhulokhi elingu-1 kg elibekwe endaweni eyisicaba liyadonswa kusetshenziswa i-dynamometer (ithuluzi lokulinganisa amandla). Lapho ibhulokhi selizohamba, i-dynamometer ifunda ama-Newton amabili. Ukusheshisa ngenxa yamandla adonsela phansi = 10 m/s2. Nquma (a) ubukhulu bamandla okungqubuzana (b) i-coefficient yokungqubuzana
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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
Amandla okudonsa (F) = 2 Newton
Jawab :
(a) Ubukhulu bamandla okungqubuzana angaguquki (f)s)
Uma ibhlogo selizohamba, ubukhulu bamandla okungqubuzana angaguquki = ubukhulu bamandla okuxhuzula (qhathanisa isibalo 1.4).
Ngakho-ke amandla okungqubuzana angaguquki (f)s) = amandla okudonsa (F) = 2 Newton
(b) I-coefficient yokungqubuzana okuqinile
