ʻO ka friction static ka ikaika friction e hana ana ma luna o nā ʻili o nā mea e pili ana kekahi i kekahi ke neʻe ʻole nā mea.
Kiʻi 1 hōʻike i kahi mea e kau mau ana ma luna o kahi ʻili pālahalaha e huki ʻia ana me ka ikaika F. Inā ʻaʻole e neʻe ana ka mea a laila fs ʻoi aku ka liʻiliʻi ma mua o ka ikaika tensile (F). Inā hoʻonui ʻia ka ikaika tensile, e neʻe ka mea. Ke kokoke ka mea e neʻe, ʻoi aku ka nui o f ma mua os e like me ka nui o ka ikaika huki (F).
ʻŌlelo ke Kānāwai Mua o Newton ua hoʻomaha kahi mea inā like ka ikaika hopena a i ʻole ka ikaika holoʻokoʻa me ka ʻole.
Inā makemake ʻoe e hoʻoholo i ke koina friction static, e hoʻohana i ka hoohalike 1.1 b
Ke neʻe ka mea, ʻo ka nui ka ikaika haʻalulu paʻa kiʻekiʻe loa like me ka nui o ka ikaika paʻi a huki paha.
Laʻana pilikia.
1. Huki ʻia kahi poloka 1 kg i kau ʻia ma luna o kahi pālahalaha me ka hoʻohana ʻana i ka dynamometer (he mea hana no ke ana ʻana i ka ikaika). Ke kokoke e neʻe ka poloka, heluhelu ka dynamometer i 2 Newtons. ʻO ka wikiwiki ma muli o ke koʻikoʻi = 10 m/s2E hoʻoholo (a) ka nui o ka ikaika friction (b) ke koina o ka friction
Pahana
Ua ʻike ʻia :
Ka nuipa o ka poloka (m) = 1 kg
Ka wikiwiki ma muli o ke koʻikoʻi (g) = 10 m/s2
ʻO ke kaumaha o ka poloka (w) = mg = (1 kg)(10 m/s)2) = 10 kg m/s2 = 10 Newton
Ka ikaika tensile (F) = 2 Newton
Pane :
(a) Ka nui o ka ikaika kuʻi paʻa (fs)
Ke kokoke e neʻe ka poloka, ʻo ka nui o ka ikaika friction static = ka nui o ka ikaika tensile (e hoʻohālikelike i ka hoʻohālikelike 1.4).
No laila, ʻo ka ikaika haʻalulu paʻa (fs) = ka ikaika tensile (F) = 2 Newton
(b) Ka helu kuʻi paʻa
