Kuyenda pa ndege yopendekeka popanda mphamvu yokangana - kugwiritsa ntchito lamulo la Newton la mavuto oyenda ndi mayankho ake

1. Mabokosi Unyinji = 2 kg, kuthamanga chifukwa cha mphamvu yokoka = 9.8 m/s²Pezani (a) mphamvu yopezera mphamvu yomwe imafulumizitsa bokosilo kupita pansi (b) kukula kwa bokosilo kuthamanga.

Anakonza

Zodziwika:

Kulemera (m) = 2 kg

Kuthamanga chifukwa cha mphamvu yokoka (g) = 9.8 m/s²

Kunenepa (w) = mg = (2)(9.8) = 19.6 Newtons

w_x = w sin 30 = (19.6)(0.5) = 9.8 Newtons

w_y = w cos 30 = (19.6)(0.5√3) = 9.8√3 Ma Newton

Yankho:

(a) The ukonde wace yomwe imafulumizitsa bokosilo

Malo otsetsereka ndi osalala, kotero palibe mphamvu yokangana. Mphamvu yokhayo yomwe imagwira ntchito pa chinthucho ndi w_x.

∑F = w_x

∑F = 9.8 Newton

(b) kukula kwa kuthamanga

∑F = ma

9.8 = (2) a

a = 9.8 / 2

a = 4.9 m/s²

Kukula kwa kuthamanga kwa liwiro ndi 4.9 m/s², njira yopititsira patsogolo liwiro ndi yotsika.

2. Ndege yopendekera ndi yosalala kotero palibe mphamvu yokanganaKulemera kwa chinthucho ndi 3 kg, kuthamanga chifukwa cha mphamvu yokoka ndi 9.8 m/s²Dziwani kukula kwa mphamvu F ngati (a) chinthu chili pamalo opumulira (b) chinthu chikuyenda pansi ndi kuthamanga kosalekeza kwa 2 m/s² (c) chinthu chikuyenda mmwamba ndi liwiro losalekeza la 2 m/s².

Anakonza

Zodziwika:

Kulemera (m) = 3 kg

Kuthamanga chifukwa cha mphamvu yokoka (g) = 9.8 m/s²

Kulemera (w) = mg = (3)(9.8) = 29.4 Newtons

w_x = w sin 30 = (29.4)(0.5) = 14.7 Newtons

w_y = w cos 30 = (29.4)(0.5√3) = 14.7√3 Ma Newton

Yankho:

(a) Kukula kwa mphamvu F ngati chinthu chili pamalo pake

Lamulo loyamba la Newton Kusuntha kumatanthauza kuti ngati chinthu chili pamalo opumulira, mphamvu ya neti imagwira ntchito pa chinthucho ndi zero.

∑F=0

F – w_x = 0

F = w_x

F = 14.7 Newton

(b) Kukula kwa mphamvu F ngati chinthu chikuyenda pansi pa 2 m/s yokhazikika²

∑F = ma

w_x – F = ma

14.7 – F = (3)(2)

14.7 – F = 6

F = 14.7–6

F = 8.7 Newton

(c) Kukula kwa mphamvu F ngati chinthu chikuyenda mmwamba pa 2 m/s yokhazikika²

∑F = ma

F – w_x = ma

F – 14.7 = (3)(2)

F – 14.7 = 6

F = 14.7 + 6

F = 20.7 Newton

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3. Lamulo lachiwiri la Newton la kayendedwe
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5. Kuyenda pamwamba mopingasa popanda mphamvu yokangana
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