Ukuxabana - le yenye yezona ngongoma ibalulekileyo okuhambisa. Yintoni oyaziyo ngaye?

Ebudeni beminyaka yakhe yesikolo, kwibakala lesixhenxe okanye yesibhozo, elowo wazana ingqiqo entsha physics olutshintshatshintshayo - kunobunye. Ke baninzi, njengoko abadala, ukulibala ukuba kuvele loo nendlela le amandla imisebenzi. Makhe zama ukuqonda esi sihloko.

le nkcazelo

Ukuxabana - into leyo iquka iintsingiselo zilandelayo: Xa izidumbu ezimbini ukunxibelelana nabanye kwindawo qha enza intsebenziswano okhethekileyo ethintela imizimba kuqhubeka eshukumisa xa kuthelekiswa namanye. Licacile elokuba, sinako ukubala ixabiso impefumlelwano kula maqumrhu. Umkhosi frictional nje emva indlela abasabela ngayo yaye ephawula nangokobungakanani. Xa kusenzeka ukuxabana phakathi kwamaqumrhu eziqinileyo (umz, impefumlelwano kunye kwithala incwadi okanye kwetafile ne-apile ncwadi), ngoko kukho intsebenziswano enjalo ekuthiwa ukukhuhlana owomileyo.

Kufuneka kuqondwe ukuba ivuse - inqaba zohlobo electromagnetic. Oku kuthetha ukuba unobangela woku imikhosi intsebenziswano phakathi kweengqakumbana ezenza umzimba ethile.

Yintoni ukuxabana?

Ngenxa iyantlukwano ezikhoyo kwihlabathi lethu bezinto, uyakwazi ukubona ukuba ngamnye kubo isakhiwo yayo kwaye iipropati ngamnye. Oku kuthetha ukuba intsebenziswano phakathi izifundo ezahlukileyo, ziya kwahluka. Ukuze ufumane ulwazi oluchanekileyo umongo kunye nesisombululo bolu iingxaki ezininzi kuyinto ukwahlulwa ngokuqhelekileyo iintlobo ezintathu kunobunye. Ngoko ke, thina uchaze ngokwahlukeneyo:

• Usukuzwano lokuqala - le iimpikiswano zochuku yokuphumla, olwenzeka xa kungekho nentshukumo efanayo izidumbu ezimbini. Siza kubona imizekelo kuyo yonke indawo, kuba amandla eyenziwe ngulo ukukhuhlana, egcina izinto balance. Ngokomzekelo, izinto kwi ihamba ibhanti yokuthutha, isikhonkwane eqhutywa eludongeni, okanye umntu emi phantsi.
• Ngokuhambisa ukukhuhlana - a ivuse yesibini olunemiqathango. Ixabiso slip uzimisele ukuze xa umzimba ngeli zilingana, amandla lusetyenziswa ukuba mkhulu amandla zochuku emile, amandla uqalisa ukwenza sliding ukukhuhlana, nomzimba Ixhume endaweni.
• Ekugqibeleni, ukukhuhlana lothuli echaza impefumlelwano imizimba ababini, omnye uqengqa phezu komnye. Lo mahluko zochuku onenombolo ngokuhambisa ngenxa yokuba nayiphi na intshukumo ummandla benamzimba asuswa kubude ujongise, kwaye endaweni baphuke kusekwa bonds ezintsha aphakathi. Yaye kwimeko apho adlula ivili ngaphandle buyacutheka, iibhondi ngemolekyula kunye nezabelo lift ivili ezaphukileyo kakhulu ngokukhawuleza kunokuba xa sliding. Kubonakala ukuba amandla zochuku lothuli lingaphantsi kwe imikhosi sliding.

Phi nendlela ungasebenzisa i zochuku?

Ukuxabana - kuyeyona nto kubalulekile, ngaphandle apho asiyi kuba nako ukwenza izinto ezisisiseko: ukuhamba, ahlale okanye nje ukugcina izinto ezandleni zabo. Ngoko ke musa phantsi ixabiso kunobunye. Xa amazwi yamachiza French Guillaume: "zochuku Musa, umhlaba wethu uya kuba ngaphandle kwalo naluphi na uburhabaxa, oko bekuya kufana nethontsi ulwelo."

Mhlawumbi umzekelo ilungileyo elichaza kakhulu nangokuchanekileyo zochuku - lo ngumsebenzi kweevili. Nkqu kumaxesha amandulo wawuqhutywa ukuba imikhosi asenokuvela zochuku kuba ngaphantsi kakhulu utyhala imikhosi zochuku. Kuyinto inzuzo engenakuphikiswa kunobunye lothuli yaba sizathu, ukuba abantu baqala ukubeka bhala okanye nosaziwayo ukuhambisa umthwalo onzima kunye oversized. Ekuhambeni kwexesha, abantu baphucule ulwazi lwabo malunga iimpawu ezimangalisayo asenokuvela ukukhuhlana, waphawula intshukumo izinto phantsi kweempembelelo imikhosi frictional, yaye ekugqibeleni owavela ivili! Kwihlabathi lanamhlanje akunakwenzeka ukuba nomfanekiso-ngqondweni ngaphandle kwezi ndawo kubalulekile, kuba amavili - lo "iinjini 'wesibini nasiphi na isithuthi!

Indlela yokubala ixabiso amandla zochuku?

Njengazo naziphi na ezinye amandla, amandla zochuku unemilinganiselo apheleleyo. Ukuze ikwazi ukubonisa ngokuchanekileyo ukuba iyafuneka njani amandla kakhulu ukuhamba okanye ezinye iintlobo zomsebenzi, kuyimfuneko ukubala amandla kunobunye static. Oku kudla inxaxheba iinjineli, xa, umzekelo, ukwakha imizi-mveliso, okanye ceba izixhobo ezintsha. Noko ke, abafundi nokuqheleka sijongene neengxaki, apho ufuna ukubala amandla zochuku. Ngoko ke, ukubala ixabiso layo, kufuneka nje ukuba usebenzise indlela yokubala elula: F _zochuku = K * N, apho k - 'A' ngumlingani ka kunobunye. Intsingiselo zonke okuza ixhomekeke usoloko phezu komhlaba into enambuzelayo ngu okanye esinxibelelana emzimbeni,. "N" phezu komzimba ifomula yethu yokusabela ngamandla emhlabeni. Kuxhomekeke becala ubunzima bomzimba, apho wadibana kumphezulu inkxaso.

Thina zibale ixabiso amandla kule ngxaki

Zicingele m = ubunzima umzimba ka-3 kg kukuba ebhodini tye. Ngumlingani ungquzulwano phakathi kwebhodi iinkuni nomzimba 0.3. Usifumana njani ixabiso amandla kunobunye? elula kakhulu, kodwa ke kufuneka ukuba kufakwe endaweni imilinganiselo zethu ifomula. kuphela kubalulekile ukuqwalasela ukuba kulo mzekelo N ilingana ubunzima bomzimba (umthetho Newton 3 leyo). Ngoko ke, lo amandla efunekayo silingana (m * g) * k = ( 3 * 10 kg m / s ²⁾ * 0.3 = 9 H.