Ka nuipa a me ke kaumaha - nā pilikia a me nā hoʻonā

Ua hoʻoponopono ʻia nā pilikia ma nā kānāwai neʻe o Newton - Mass, a me ke kaumaha

1. ʻO ke kaumaha o kahi nuipa 1 kg ma ka ʻili o ka Honua he… g = 9.8 m/s ²

ʻIke ʻia:

Nuipaʻa (m) = 1 kg

ʻO ka wikiwiki ma muli o ke koʻikoʻi ma ka ʻili o ka Honua (g) = 9.8 m/s ²

Makemake ʻia: kaumaha (w)

Lōlā:

w = mg

m = ka nuipa (ʻO ke anakahi SI o ka nuipa ʻo ke kilokani, kg)

g = ka wikiwiki ma muli o ke koʻikoʻi (ʻO ke anakahi SI o g he m/s ² )

w = kaumaha (ʻO ke anakahi SI o w he kg m/s ² a i ʻole Newton)

Kaona:

w = (1 kg)(9.8 m/s² ⁾ = 9.8 kg m/s² ⁼ 9.8 Newtons

2.

(a) E kahakiʻi i ka ikaika o ke koʻikoʻi (kaumaha) e hana ana ma luna o ka mea ke hoʻomaha ka mea ma luna o kahi papaʻaina, e like me ka mea i hōʻike ʻia ma ke kiʻi (a).

(b) E kahakiʻi i ka ikaika o ke kaumaha (kaumaha) a me kona mau ʻāpana e hana ana ma luna o kahi mea e paheʻe ana i lalo i kahi mokulele hilig , e like me ka mea i hōʻike ʻia ma ke kiʻi (b)

pāʻoihana

ʻO ke kuhikuhi o ke kaumaha e iho ana i lalo i ke kikowaena o ka Honua.

w _x = ka ʻāpana pae o ke kaumaha a me w _y = ka ʻāpana kū pololei o ke kaumaha

3. ʻO ke kaumaha o kahi pahu he 1 kg a ʻo ka wikiwiki ma muli o ke koʻikoʻi he 9.8 m/s ^2. E huli (a) ke kaumaha (b) ka ʻāpana moe a me ka ʻāpana kū o ke kaumaha.

pāʻoihana

Kaumaha: w = mg = (1 kg)(9.8 m/s² ⁾ = 9.8 kg m/s² ⁼ 9.8 Newtons

ʻO ka ʻāpana pae o ke kaumaha:

w _x = w sin 30 ^o = (9,8 N)(0,5) = 4.9 Newtons

ʻO ka ʻāpana kū pololei o ke kaumaha:

w _y = w cos 30 ^o = (9.8 N)(0.5√3) = 4.9√3 Newtons

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1. Ka nuipa a me ke kaumaha
2. Ka ikaika maʻamau
3. Ke kānāwai ʻelua o ka neʻe ʻana o Newton
4. ʻO ka ikaika pili
5. Ka neʻe ʻana ma luna o ka ʻili ākea me ka ʻole o ka ikaika friction
6. ʻO ka neʻe ʻana o nā kino ʻelua me ka wikiwiki like ma luna o ka ʻili pālahalaha ʻinoʻino me ka ikaika friction
7. Ka neʻe ʻana ma luna o ka mokulele i hoʻohuli ʻia me ka ʻole o ka ikaika friction
8. Ka neʻe ʻana ma luna o ka mokulele i hoʻohaʻahaʻa ʻia me ka ikaika friction
9. Neʻe ʻana i loko o kahi elevator
10. Hoʻopili ʻia ka neʻe ʻana o nā kino e nā kaula a me nā pulleys
11. ʻElua mau kino me ka nui like o ka wikiwiki
12. Ke hoʻopuni ʻana i kahi piʻo pālahalaha - nā dinamika o ka neʻe pōʻai
13. Ke hoʻopuni ʻana i kahi piʻo panakō - nā dinamika o ka neʻe pōʻai
14. Neʻe like ʻana ma kahi pōʻai ʻākea
15. Ka ikaika centripetal i ka neʻe pōʻai like