Amfani da kiyaye makamashin injiniya don motsi a tsaye a lokacin faɗuwar 'yanci - matsaloli da mafita

1. Mutum yana jefa dutse mai nauyin kilogiram 1 sama a gudun mita 2/s yayin da yake tsaye a gefen wani dutse don dutsen ya faɗi zuwa gindin dutsen mita 40 a ƙasa. Menene ƙarfin motsi na dutse a mita 10 sama da ƙasa? Saurin gudu saboda nauyi g = 10 m/s ².

An sani:

Nauyi (m) = 1 kg

Saurin farko (v _o ) = 2 m/s

Canjin tsayi = 40 – 10 = mita 30

Saurin gudu saboda nauyi (g) = 10 m/s ²

Ana so: kuzarin motsi na dutse a mita 10 sama da ƙasa

Magani:

Makamashin injina na farko

Ƙarfin ƙarfin nauyi na farko (EP) = mgh = (1)(10)(30) = Joules 300

Makamashin motsi na farko (KE) = ½ mv _o ² = ½ (1)(2) ² = ½ (4) = Joules 2

Makamashin injiniya na farko = ƙarfin ƙarfin nauyi na farko + kuzarin motsi na farko = 300 + 2 = Joules 302.

Makamashin injiniya na ƙarshe

Makamashin injiniya na ƙarshe = makamashin motsi na ƙarshe = ƙarfin ƙarfin nauyi na farko + kuzarin motsi na farko = 300 + 2 = Joules 302.

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2. Mutum yana jefa wani abu mai nauyin kilogiram 1 sama zuwa sama da saurin farko na m10/s. A tantance (a) ƙarfin ƙarfin nauyi a matsakaicin tsayi (b) matsakaicin tsayi.

Saurin gudu saboda nauyi shine 10 m/s ²

An sani:

Nauyi (m) = 1 kg

Saurin farko (v _o ) = 10 m/s

Saurin gudu saboda nauyi (g) = 10 m/s ²

Ana so : ƙarfin ƙarfin nauyi a matsakaicin tsayi da matsakaicin tsayi

Magani:

(a) ƙarfin ƙarfin nauyi a matsakaicin tsayi

Makamashin injina na farko:

Makamashin injiniya na farko (ME) = makamashin motsi na farko (KE) = ½ mv _o ² = ½ (1)(10) ² = ½ (100) = Joules 50.

Makamashin injiniya na ƙarshe:

Makamashin injiniya na ƙarshe (ME) = makamashin ƙarfin nauyi (PE)

Ka'idar kiyaye makamashin inji:

Makamashin injina na farko = makamashin injina na ƙarshe

KE = PE

50 = PE

Ƙarfin ƙarfin nauyi shine joules 50.

(b) Matsakaicin tsayi

PE = mgh

50 = (1)(10) h

50 = awanni 10

h = 50 / 10 = mita 5

Tsawonsa ya kai mita 5 sama da ƙasa.

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1. An yi aiki da ƙarfin gwiwa da mafita da matsaloli
2. Matsalolin makamashin aiki da kuma mafita da mafita
3. Matsaloli da mafita na ƙa'idodin makamashin aiki-injini
4. Matsalolin makamashi masu yuwuwar nauyi da mafita
5. Ƙarfin da ke tattare da matsalolin bazara masu laushi da mafita
6. Matsalolin wutar lantarki da mafita
7. Amfani da kiyaye makamashin injiniya don motsi na faɗuwa kyauta
8. Amfani da kiyaye makamashin injiniya don motsi sama da ƙasa a cikin motsi na faɗuwa kyauta
9. Amfani da kiyaye makamashin injiniya don motsi a kan saman da ke lanƙwasa
10. Amfani da kiyaye makamashin injiniya don motsi a kan jirgin sama mai karkata
11. Amfani da kiyaye makamashin injiniya don motsi mai ƙarfi