1. Tsanangudzo yemaitiro
Simba chinhu chinoita kuti zvinhu zvionekwe kukurumidzaNemamwe mashoko, simba chinhu chinofamba, chinomisa kana kuchinja mafambiro echinhu.
Maitiro acho huwandu hwevector Saka, simba rine hukuru uye gwara. Chiratidzo chesimba ndiF (Simba). F chiratidzo chesimba. Kune mhando dzakasiyana dzesimba, uye haasi marudzi ese esimba ane chiratidzo F. Chikamu chesimba chepasi rose ikg m/s2 anonzi Newton.
2. Kunzwisisa simba rose kana simba rinobuda
Simba rose kana simba rinobuda ndiro huwandu hwemasimba ese anoshanda pachinhu. Simba huwandu hwevector, saka simba rose rinoverengerwa uchishandisa mutemo wekuwedzera vector.
Muenzaniso wematambudziko.
1.
Simba rose = 10 Newton, divi resimba rose riri kurudyi.
2.
Simba rose = 8 Newton, divi resimba rose riri kurudyi
3.
Simba rose = 0
4.
Simba rose = 0
5. Kana huwandu hwezvinhu zvakafanana, saka chinhu chine kukurumidza kukuru ndeche...
Kukurukurirana
Mutemo weChipiri waNewton unoti hukuru hwekumhanya kunoitika nechinhu hunoenderana nehukuru hwesimba uye hunoenderana nehuremu hwechinhu. Kutungamira kwekumhanya kana kutungamira kwekufamba kwechinhu kunoenderana nekutungamira kwesimba rinobuda richishanda pachinhu chacho.
Kuumbwa kwemasvomhu kwemutemo wechipiri waNewton: a = F / m
Kukurumidzisa kunoenderana nesimba, saka chinhu chine kukurumidza kukuru ndicho chinhu chinoshanda nesimba guru rinobuda.
Maitiro acho huwandu hwevector Saka, kuwedzerwa kwemasimba kunogadziriswa zvichienderana nemitemo yekuwedzera huwandu hwevector. Kana masimba ari mumutsara wakatwasuka, ipapo masimba ari munzira imwe chete anowedzerwa uye masimba ari munzira yakasiyana anobviswa.
A –> Simba rinobuda = 5 + 2 + 3 = 10 Newtons (gwara resimba kurudyi)
B –> Simba rinobuda = 3 + 5 – 2 = 6 Newtons (nzira yesimba kurudyi)
C –> Simba rinobuda = 5 – 12 – 3 = -10 Newton (gwara resimba kuruboshwe)
D –> Simba rinobuda = 3 – 5 – 12 = -14 Newton (gwara resimba kuruboshwe).
Zviratidzo zvakanaka nezvakaipa zvinongotsanangura divi resimba rinobuda. Simba rinobuda Chiratidzo chakanaka chinoreva kuti simba rinobuda riri kurudyi (chinhu chinofamba kurudyi) uye chiratidzo chisina kunaka chinoreva kuti simba rinobuda riri kuruboshwe (chinhu chinofamba kuruboshwe).
Mhinduro chaiyo ndiD.
6. Kana zvinhu zvinotevera zvine huremu hwakafanana, saka mufananidzo upi une kumhanyisa kudiki?
Kukurukurirana
Huremu hwechinhu hwakafanana, saka kumhanyisa kudiki kunowanikwa nechinhu chinoshanda nesimba diki rinobuda.
A –> Simba rinobuda = 8 + 15 – 10 = 13 Newtons (gwara resimba kurudyi)
B –> Simba rinobuda = 10 + 8 – 5 = 13 Newtons (nzira yesimba kurudyi)
C –> Simba rinobuda = 2 + 5 – 3 = 4 Newtons (gwara resimba kurudyi)
D –> Simba rinobuda = 8 + 4 – 5 = 7 Newtons (nzira yekumanikidza kurudyi)
Mhinduro chaiyo ndiC.
7. Zvinhu zvina zvine huremu hwakafanana zvinosangana nemasimba akati wandei panguva imwe chete sezvakaratidzwa pamufananidzo unotevera. Ndechipi chinhu chinoona kumhanya kudiki?
Kukurukurirana
Huremu hwechinhu hwakafanana, saka kumhanyisa kudiki kunowanikwa nechinhu chinoshanda nesimba diki rinobuda.
A –> Simba rinobuda = 35 + 30 – 25 = 40 Newtons (gwara resimba kurudyi)
B –> Simba rinobuda = 15 + 25 – 45 = -5 Newton (gwara resimba kuruboshwe)
C –> Simba rinobuda = 55 – 30 – 40 = -15 Newton (gwara resimba kuruboshwe)
D –> Simba rinobuda = 50 + 10 – 40 = 20 Newtons (nzira yekumanikidza kurudyi)
Mhinduro chaiyo ndeiyi B.
8. Kutungamira uye mhedzisiro yesimba riri mumufananidzo uri padivi ndeizvi...
A. 2 N kuenda kuTono
B. 2 N kuenda kuIrham
C. 282 N kuenda kuTono
D. 282 N kuenda kuIrham
Kukurukurirana
Huru simba rinobuda :
ΣF = 142 N – 140 N
ΣF = 2 Newton
Kutungamira kwesimba rinobuda = kutungamira kwesimba 142 Newton = kuenda kuTono, nekuti 142 Newton yakakura kupfuura 140 Newton
Mhinduro chaiyo ndiA.
9. Tarisa mufananidzo unotevera!
Umar naAmir vari kudhonzerana mativi akasiyana. Kana simba raUmar riri 25 N uye simba raAmir riri 20 N, saka mhedzisiro yemasimba maviri aya...
A. 5 Newtons
B. 20 Newtons
C. 25 Newton
D. 45 Newton
Kukurukurirana
Simba rinobuda = 25 N – 20 N = 5 Newtons
Mhinduro chaiyo ndiA.
