Mafomura Ebasa, Simba, uye Momentum: Pfungwa Dzekutanga uye Mashandisirwo
Basa, simba, uye simba zvinhu zvitatu zvakakosha mufizikisi zvinoita basa rakakosha mukunzwisisa zviitiko zvakasiyana-siyana zvechisikigo. Muchinyorwa chino, tichakurukura mafomura ane chekuita nepfungwa idzi nhatu uye mashandisirwo adzo muhupenyu hwezuva nezuva.
Bhizinesi (W)
Mufizikisi, basa rinotsanangurwa sechibereko chesimba rinoshanda pachinhu uye kusuduruka kwechinhu kuenda kune simba. Pamasvomhu, fomura yebasa inotsanangurwa se:
\[ W = F \cdot d \cdot \cos(\theta) \]
di mana:
– \( W \) ibasa (Joules, J),
– \( F \) isimba rinobata pamuviri (Newton, N),
– \( d \) idaro rinofambiswa nechinhu (mita, m),
– \( \theta \) ndiyo kona iri pakati pegwara resimba negwara rekusuduruka.
Mienzaniso yeKushandisa Bhizinesi
Muenzaniso wakapfava wekushandiswa kwepfungwa yebasa ndewekuti patinosunda bhokisi pasi. Kana tikashandisa simba re10 N kuti tifambise bhokisi mamita maviri munzira yesimba, saka basa rinoitwa ndeiri:
\[ W = 10 \, \text{N} \cdot 2 \, \text{m} \cdot \cos(0^\circ) = 20 \, \text{J} \]
Energy
Simba kugona kuita basa. Simba rinouya mumhando dzakasiyana-siyana, kusanganisira kinetic energy, potential energy, thermal energy, nezvimwewo. Mhando mbiri dzesimba dzinowanzo kurukurwa munyaya dzemakanika i kinetic energy uye potential energy.
Kinetic Energy (Ek)
Kinetic energy isimba iro chinhu chinenge chinaro nekuda kwekufamba kwacho. Fomura yekinetic energy ndeiyi:
\[ E_k = \frac{1}{2} mv^2 \]
di mana:
– \( E_k \) ndiyo simba rekinetic (Joules, J),
– \( m \) huremu hwechinhu (kilogiramu, kg),
– \( v \) ndiyo kumhanya kwechinhu (mita pasekondi, m/s).
Simba Rinogona Kuwanikwa (Ep)
Simba rinogona kushandiswa (potential energy) isimba rine chinhu nekuda kwenzvimbo yacho mumunda wesimba. Rudzi rwakajairika rwesimba rinogona kushandiswa isimba regiravhiti (gravitational potential energy), iro rakagadzirwa seizvi:
\[ E_p = mgh \]
di mana:
– \( E_p \) isimba regiravhiti (Joules, J),
– \( m \) huremu hwechinhu (kilogiramu, kg),
– \( g \) ndiko kukurumidza kunokonzerwa negiravhiti (9,8 m/s² pamusoro pePasi),
– \( h \) ndiko kureba kwechinhu kubva panzvimbo yekunongedzera (mita, m).
Mutemo weKuchengetedza Simba
Mutemo wekuchengetedza simba unotaura kuti simba harigone kugadzirwa kana kuparadzwa; rinogona kungoshandurwa kubva pane chimwe chimiro kuenda kune chimwe. Muhurongwa hwakavharwa, huwandu hwese hwesimba hunoramba hwakafanana. Semuenzaniso, mukufamba kwependulum, simba rinogona kushandiswa panzvimbo yakakwirira rinoshandurwa kuita simba rekinetic panzvimbo yakaderera, uye zvinopesana.
tichimhanya
Momentum chiyero chehuwandu hwekufamba kwechinhu uye ndicho chibereko chehukuru hwechinhu uye kumhanya kwacho. Pamasvomhu, momentum (p) inoratidzwa se:
\[ p = mv \]
di mana:
– \( p \) i momentum (kilogram metres pasekondi, kg m/s),
– \( m \) huremu hwechinhu (kilogiramu, kg),
– \( v \) ndiyo kumhanya kwechinhu (mita pasekondi, m/s).
Mutemo weKuchengetedza Simba
Mutemo wekuchengetedza simba remagetsi unoti muhurongwa hwakavharwa, huwandu hwesimba remagetsi risati rasvika uye rapfuura hwakafanana. Izvi zvinonyanya kuitika mukuroverana nekuputika. Semuenzaniso, kana mota mbiri dzikaroverana dzozomira, huwandu hwesimba radzo risati rasvika pakuroverana hwakaenzana nehuwandu hwesimba radzo mushure mekuroverana (izvo muchiitiko ichi zviri zero, sezvo mota dzese dzamira).
Mashandisirwo muHupenyu hweZuva Nezuva
Kushandiswa kweChirevo cheBasa neSimba
Muhupenyu hwezuva nezuva, tinogona kuona kushandiswa kwemashoko ebasa nesimba mumabasa akasiyana-siyana. Semuenzaniso, patinosimudza chinhu, tinoshanda tichipesana negiravhiti uye tinopa simba rekukwevera zvinhu kuchinhu chacho. Patinotasva bhasikoro, simba remakemikari rinobva muchikafu chatinodya rinoshandurwa kuita simba rekufamba, rinoita kuti bhasikoro rifambe.
Kushandiswa kweMomentum Concept
Momentum ine mashandisirwo akawanda anoshanda. Muenzaniso mumwe chete ndewekuchengetedza mugwagwa. Mabhandi ezvigaro nema airbag akagadzirwa kuti awedzere nguva yekurova panguva yetsaona, nokudaro achideredza simba rinoonekwa nevafambi. Izvi zvakavakirwa papfungwa yekuti shanduko dzinoitika munguva yakareba dzinoderedza simba rinonzwa.
Basa Nesimba MuTekinoroji
Tekinoroji dzakadai semichina nezvishandiso zvemagetsi zvinoshandisawo pfungwa dzebasa nesimba. Semuenzaniso, injini yemoto inobatidza mukati memota inoshandura simba remakemikari remafuta kuita simba remagetsi rinofambisa mota. Mapaneru ezuva anoshandura simba rezuva kuita simba remagetsi rinogona kushandiswa pazvinangwa zvakasiyana-siyana.
Kufambira Mberi Mumitambo
Mumitambo, simba remutambo rinowanzova chinhu chakakosha. Semuenzaniso, munhabvu, vatambi vanoshandisa simba ravo kudzora nekukanha bhora. Mubhokisi, vatambi vanoshandisa simba rekurova zvibhakera zvavo kuti vawedzere simba ravo kune vakwikwidzi vavo.
Mhedziso
Pfungwa dzebasa, simba, uye simba ndizvo zvinoumba hwaro hwezviitiko zvakawanda zvatinoona zuva nezuva. Kunzwisisa mashandisirwo epfungwa idzi hakungokoshi chete pakudzidza fizikisi asiwo kune kukosha kwakakosha muhupenyu hwezuva nezuva. Nekuziva pfungwa idzi, tinogona kunzwisisa zviri nani nyika yakatipoteredza uye kushandisa ruzivo urwu kugadzirisa matambudziko muminda yakasiyana-siyana.
