Misalai na inji motsi. Inji motsi: Physics, Grade 10

Misalai na inji motsi sani a gare mu daga rayuwar yau da kullum. Wannan wucewa motoci, da jiragen sama, jiragen sailing. A sauki misalai na inji motsi, muka halitta kanmu, wucewa sauransu. Kowane biyu na wannan duniya tamu ne a tashin a biyu jirage: Sun kuma ta axis. Wannan, ma, misalai na inji motsi. Don haka bari mu yanzu magana game da wannan musamman.

Abin da ya faru makanikai

, Bari mu dubi abin da ake kira makanikai da magana, abin da suke misalai na inji motsi. Ba za mu tafi a cikin wilds na kimiyya da kuma aiki a babbar dama sharuddan. Idan muka yi magana da gaske quite sauki, da makanikai - wani reshe na kimiyyar lissafi da cewa hulda tare da motsi na jikinsu. Kuma abin da zai iya zama, wannan makaniki? Dalibai a cikin kimiyyar lissafi darussa Masana ta subsections. Wannan kinematics, kuzarin kawo cikas da kuma statics.

Kowace daga cikin ƙungiyoyin da aka ma karatu da motsi na jikinsu, amma yana da halayyar kawai domin shi musamman. Wanne, ba zato ba tsammani, an amfani a warware dacewa matsaloli. Bari mu fara da kinematics. Duk wani zamani makaranta littafi ko wani lantarki hanya zai bayyana shi da cewa motsi na wani inji tsarin kinematics an dauki ba tare da shan la'akari da dalilan da kai ga motsi. A daidai wannan lokaci da muka sani cewa hanyar da hanzari, wanda zai haifar a cikin jiki a cikin motsi, shi ne karfi.

Abin da idan da ikon ka bukatar ka yi la'akari

Amma idan akai la'akari riga interactions wayar yayin tuki ke tsunduma a cikin gaba sashe, da ake kira kuzarin kawo cikas. Inji motsi gudun wanda shi ne daya daga cikin muhimmanci sigogi a cikin kuzarin kawo cikas inseparably nasaba da wannan ra'ayi. A karshe na sassan - statics. Ta An nazarin yanayin ma'auni na inji tsarin. A sauki misali ne a tsaye daidaita awo hour. Lura da malamai: darasi a kimiyyar lissafi, "inji motsi" a cikin makaranta ya kamata a fara da wannan. Da farko, ba misalai, sa'an nan raba kashi uku, makanikai, kuma amma sai ci gaba da sauran.

Wane kalubale

Ko da idan muka koma kawai guda sashe, bari mu zaton shi ne kinematics, mu a nan tsammani a babbar dama daban-daban ayyuka. The abu ne cewa, akwai da dama da yanayi, dangane da wanda, wannan aiki za a iya gabatar a cikin wani daban-daban haske. Haka kuma, matsalar a kinematic motsi za a iya rage zuwa hali na free fall. Wannan za mu yanzu tattauna.

Mene ne free-fall a cikin kinematics

Wannan tsari na iya ba 'yan ma'anar. Duk da haka, da suka zai babu makawa za a rage zuwa guda batu. Lokacin da wani free fall a jiki kawai karfi na nauyi abubuwa. An directed daga tsakiyar jiki taro tare da radius ga tsakiyar duniya. Sauran iya zama "sanyi" da harshen da ma'anar da zaran ka so. Duk da haka, da gaban daya kawai na nauyi a lokacin irin wannan yunkuri shi ne wajibi.

Yadda za a warware matsalolin a free fall a cikin kinematics

Da farko muna bukatar "samun riƙe" dabarbari. Idan ka tambaye zamani malami a kimiyyar lissafi, ya karɓa muku cewa ilimi na dabarbari - shi ne rabin da mafita. A kwata aka bai a kan fahimtar da tsari da kuma wata kwata - a kan lissafi tsari. Amma da dabara, dabara da kuma dabara sake - wannan shi ne abin da ya ƙunshi wani taimako.

Za mu iya kiran free fall na musamman hali na gaba ɗaya kara motsi. Me ya sa? Haka ne, domin muna da abin da yana daukan. Hanzari ba ya canja, shi ne 9.8 mita biyu Squared. A wannan hasashe, za mu iya tafiya a kan. Formula nesa tafiya ta jiki lokacin uniformly kara motsi, yana da siffar: S = Vot + (-) a ^ 2/2. A nan, S - nesa, Vo - na farko gudu, t - lokaci, a - hanzari. Yanzu za mu yi kokarin kawo wannan dabara domin haka al'amarin na free fall.

Kamar yadda muka ce a baya, wannan shi ne na musamman hali na gaba ɗaya kara motsi. Idan wani - shi ne mai al'ada na kowa nadi hanzari, g a (da kuma maye gurbin) zai yi wani tabbataccen lamba darajar, kuma aka sani da tabular. Bari mu sake rubutawa da dabara nesa tafiya ta jiki na harka tare da free fall: S = Vot + (-) GT ^ 2/2.

An fahimci cewa a irin wannan yanayi motsi za su faru a tsaye jirgin sama. Don Allah kula da gaskiyar cewa babu wani daga cikin zabin da cewa ba za mu iya bayyana daga sama dabara, m na jiki nauyi. Kada ku jefa akwatin ko dutse, misali, daga cikin rufi, ko a kan biyu daban-daban dutse nauyi - wadannan abubuwa a lokaci guda farkon fall da komai a fili kusan lokaci guda.

Freefall. Inji motsi. ayyuka

Af, akwai irin wannan abu a matsayin instantaneous gudun. Yana nufin da sauri a kowane lokaci motsi. Kuma a free fall za mu iya sanin ko shi da sauƙi, da sanin kawai da farko kudi. Kuma idan shi ne sifili, al'amarin yake kullum a yanki na cake. Formula instantaneous gudu a free fall a cikin kinematics da siffan: V = Vo + GT. Lura cewa "-" alama bace. Bayan an saka, lokacin da jiki slows saukar. Kuma kamar yadda a cikin jiki iya rage gudu fall? Saboda haka, idan na farko gudu bai aka ruwaito, instantaneous ne kawai ta daidaita da samfurin nauyi hanzari g a lokacin fadowa t, ya elapsed tun da farko na motsi.

Physics. Inji motsi a free fall

Bari mu matsa zuwa takamaiman matsaloli a kan wannan batun. Zaton da wadannan yanayin. The yara yanke shawarar da wasu fun da kuma jefa wani wasan tennis ball to rufin gidan. Gano abin da ya gudu a wasan tennis ball a lokacin da tasiri da ƙasa, idan gidan yana da goma sha biyu benaye. Tsawo na daya bene a kafa daidaita zuwa uku mita. The ball da aka saki daga hannunsa.

Ganawa wannan kalubale ba zai zama daya-mataki, kamar yadda za ka iya tunani a farko. Da alama cewa duk abin da alama impossibly sauki, kawai musanya lambar da ake so a cikin dabara da instantaneous gudu da kuma duk. Amma a lokacin da suka yi haka za mu iya fuskantar matsalar: ba mu san lokacin fall na ball. Bari mu dubi sauran bayani na matsalar.

Dodge a karkashin

Da fari dai, muna ba da dama benaye, kuma mun san da tsawo daga kowane daga cikinsu. Shi ne mita uku. Saboda haka, za mu iya nan da nan lissafi da al'ada nesa daga rufin zuwa ga ƙasa. Abu na biyu, muna gaya wa cewa ball da aka saki daga hannunsa. Kamar yadda ya saba, a cikin matsaloli na inji motsi (da kuma a cikin matsaloli a general) akwai kananan details, wanda da farko duba iya ba ze kamar wani abu da ma'ana. Duk da haka, akwai wani magana ce cewa tennis ball yana da wani na farko gudu. Excellent, daya daga cikin sharuddan a cikin dabara sai vuya. Yanzu muna bukatar ganin lokaci, wanda aka gudanar da ball a cikin iska kafin karo da ƙasa.

Domin wannan mun bukatar da nesa dabara da inji motsi. Da farko cire samfurin na farko gudun a lokacin da motsi, tun da shi ne sifili, ya kuma inganta samfurin zai zama daidai da sifili. Next, mun ninka bangarorin biyu da biyu zuwa rabu da kasarun adadi. Yanzu za mu iya bayyana lokacin square. Don wannan har sau biyu da nesa raba da gravitational hanzari. Za mu kawai da ya dauki cikin square tushen wannan magana sani nawa lokaci ya wuce kafin karo na ball da ƙasa. Canza lambobin tushen tsantsa da kuma samu kimanin 2,71 seconds. Yanzu cewa yawan da aka sauya a cikin dabara da instantaneous gudu. Mun samu kamar 26,5 mita biyu.

Lura ga malamai da almajiran iya tafi kadan da sauran hanyar da. Don kauce wa rikice a wadannan Figures, shi ya zama zai yiwu ya rage wuya da karshe dabara. Wannan zai zama da amfani saboda babu za su kasa hadarin ga samun ɓace a nasu lissafin, da kuma ba da damar su da kuskure. A wannan yanayin, muna iya ci gaba kamar haka: don bayyana dabara na nesa lokaci, amma ba su musanya lambobi da kuma musanya wannan magana a cikin dabara da instantaneous gudu. Sai ta duba kamar haka: V = g * sqrt (2s / g). Amma cikin hanzari da nauyi zai iya sa m magana. Don yin wannan, shi zai gabatar a cikin square. Mun samu V = sqrt (2s * g ^ 2 / g). Yanzu za mu rage hanzari da nauyi a cikin hada da a cikin numerator shafe ta digiri. A sakamakon haka, mun samu V = sqrt (2gS). Amsar zai zama guda, kawai lissafi zai zama kasa.

Results da kuma ƙarshe

Saboda haka, abin da muka koya a yau? Akwai 'yan sassan cewa ana karatu da lissafi. Inji motsi da shi da aka raba shi zuwa statics, kuzarin kawo cikas da kuma kinematics. Kowace daga cikin wadannan mini-Sciences yana da halaye, wanda ake dauka a cikin asusun a lokacin da warware matsaloli. Duk da haka, za mu iya ba da wani sifofinsu da irin wannan ra'ayi kamar yadda inji motsi. 10 aji - mafi aiki nazarin wannan reshe na kimiyyar lissafi, bisa ga makaranta manhaja. Makanikai ma ya hada da lokuta na free fall, kamar yadda su ne m ra'ayoyi na gaba ɗaya kara motsi. Kuma da wadannan yanayi, za mu yi amfani da shi ne kinematics.