Kimiyya

Fahimtar Nisa
Nisa ita ce tsawon hanyar da wani abu ya bi. Nisa adadi ne na sikelin, adadi ne na zahiri wanda ke da girma kawai kuma babu alkibla. Naúrar nisa ta duniya ita ce mita, wacce aka taƙaita ta m. Alamar nisa ita ce s.

Ma'anar Gudun Hijira
Komawa wuri shine canjin matsayin abu. Komawa wuri adadi ne na vector, adadi na zahiri wanda ke da girma da alkibla. Alkiblar komowa ana iya bayyana ta a matsayin alkibla ta asali (arewa, gabas, kudu, yamma, da sauransu) ko ta amfani da kalmomin hagu, dama, sama, ko ƙasa.

Karin bayani

Dokar kiyaye ƙarfin kusurwa ya bayyana cewa idan lokacin ƙarfi da ya biyo baya a cikin abu mai tauri wanda ke juyawa ƙimar sifili ce to ƙarfin kusurwa Abu mai tauri a cikin motsi mai juyawa akai-akai. Ana iya samo dabarar dokar kiyaye motsin kusurwa ta hanyar lissafi ta hanyar gyara dabarar dokar motsi ta biyu ta Newton don motsin kusurwa.

Karin bayani

Idan akwai ƙarfin sakamako akan abu mai taro m, to abin yana motsawa a layi madaidaiciya tare da hanzari a. Alaƙar da ke tsakanin ƙarfin sakamako, taro da hanzari ana bayyana ta ta hanyar lissafi:

Wannan shine lissafin dokar Newton ta biyu wadda aka yi nazari a cikin aji na X.

Adadin jiki a cikin motsi na juyawa wanda yayi daidai da ƙarfin da aka samu a cikin motsi madaidaiciya shine lokacin da aka samu na ƙarfi . Adadin jiki a cikin motsi na juyawa wanda yayi daidai da taro a cikin motsi madaidaiciya shine lokacin inertia . Adadin jiki a cikin motsi na juyawa wanda yayi daidai da hanzari a cikin motsi madaidaiciya shine hanzarin kusurwa.

Karin bayani

1. Salon masu ra'ayin mazan jiya
Idan aikin da ƙarfi ke yi lokacin da abu ya fara motsawa daga matsayinsa na farko har sai abin ya koma matsayinsa na farko daidai yake da sifili, to ana kiran ƙarfin da ƙarfi mai ra'ayin mazan jiya.
Ga wasu misalan salon masu ra'ayin mazan jiya.

1.1. Nauyi
Ka yi la'akari da abu yana motsawa a tsaye har sai ya kai matsakaicin tsayi sannan ya koma ƙasa zuwa matsayinsa na asali. Yayin da yake motsawa a tsaye sama da nisa h, ƙarfin nauyi yana akasin alkiblar da abin ya motsa. Domin yana akasin alkiblar da abin ya motsa, ƙarfin nauyi yana aiki mara kyau akan abin.
W = wh cos (180^o) = – wh = – mgh

Karin bayani

Ƙarfin gogayya mai tsauri shine ƙarfin gogayya da ke aiki akan saman abubuwan da ke hulɗa da juna lokacin da abubuwan ba sa motsi.

Karin bayani

Gogayya ta kinetic ita ce ƙarfin gogayya da ke aiki a saman abubuwan da ke hulɗa da juna lokacin da abubuwan ke motsi.
Idan kana son tantance ƙarfin gogayya mai motsi, yi amfani da lissafi 1.5 a. Idan kana son tantance ma'aunin gogayya mai motsi, yi amfani da lissafi 1.5 b.

Karin bayani

Kayan Makamashin Kinetic a cikin Motsin Juyawa

Abubuwan da ke tafiya a layi madaidaiciya suna da makamashin motsi wanda za a iya ƙididdige shi ta amfani da dabarar:
EK = ½ mv²
Bayani:
EK = kuzarin motsi (raka'o'in ƙasa da ƙasa sune kg m²/s² ko Joule)
m = nauyi (naúrar ƙasa da ƙasa kilogiram ne, a takaice kg)
v = gudu (naúrar ƙasa da ƙasa mita/daƙiƙa ce, an taƙaita ta a matsayin m/s)
Adadin jiki a cikin motsi na juyawa iri ɗaya ne da nauyi (m) a kan motsi kai tsaye shine lokacin inertia (I)Adadin jiki a cikin motsi na juyawa iri ɗaya ne da gudu (v) a cikin motsi na juyawa shine saurin kusurwaSaboda haka, abu da ke juyawa yana da kuzarin motsi wanda za'a iya ƙididdige shi ta amfani da dabarar:

Karin bayani

Kayan Aikin Makamashin Kinetic da Physics

Idan ƙarfin yanar gizo ya yi aiki a kan wani abu, abu yana fuskantar hanzari (da kuma motsawa). Idan abu ya fuskanci hanzari, saurinsa yana canzawa. Ana iya cewa aikin da ƙarfin yanar gizo ya yi yana da alaƙa da saurin farko da na ƙarshe na abu.
Aikin da aka yi akan wani abu ta hanyar cikakken ƙarfi:
Jimlar ƙoƙari (W) = Ƙarfin sakamako (Jimlar F) x ƙaura (s)
Dokar Newton ta Biyu ta bayyana cewa idan akwai cikakken ƙarfi da ke aiki akan wani abu, abin zai fuskanci hanzari.

Karin bayani

Misalai 9 na Tambayoyin Kasuwanci

1. Ana amfani da ƙarfin Newton guda 20 a kan toshe har sai toshen ya yi tafiyar mita 2. Aikin da ƙarfin F ke yi a kan toshen shine…
Tattaunawa
An sani :
Ƙarfi (F) = 20 N
Matsugunin (s) = mita 2
Kusurwa = 0 (alkiblar ƙarfin iri ɗaya ce da alkiblar motsi ko kuma alkiblar ƙarfin ta yi daidai da alkiblar motsi ta yadda kusurwar da ƙarfin da motsi suka samar ta zama sifili)

Karin bayani

Sharaɗin farko don daidaita jiki mai tauri :
Dokar Newton ta Biyu ta bayyana cewa idan ƙarfin da ke aiki a kan wani abu (ana ɗaukar abin a matsayin ƙwayar cuta) bai kai sifili ba, to abin zai motsa da sauri a kowane lokaci inda alkiblar motsin abin yake daidai da alkiblar ƙarfin da ke fitowa. Idan ƙarfin da ke fitowa sifili ne, to abin yana hutawa ko kuma abin yana tafiya a daidai lokacin da ake buƙata.

Karin bayani