Magulu a Gurumuda
Kugundana - mavuto ndi mayankho
1. Chinthu A (3 kg) chimayenda pa liwiro la 8 m/s ndipo chinthu B (5 kg) chimayenda pa liwiro la 4 m/s. Ngati kugundana pakati pa zinthu A ndi B kuli kolimba bwino, kodi ndi chiyani chomwe chimapangitsa kuti chikhale cholimba? kuthamanga ya zinthu A ndi B pambuyo pa kugundana?
Zodziwika:
Misa cha chinthu A (m1) = 3 kg
Kulemera kwa chinthu B (m2) = 5 kg
The liwiro chinthu A (v)1) = 8 ms-1
Liwiro la chinthu B (v)2) = 4 ms-1
Ma vector a unit - mavuto ndi mayankho
1. Chinthu chimayenda pa kuthamanga ya v = (2i − 1.5j) m/s. Kodi ndi chiyani kusamuka cha chinthucho pambuyo pa masekondi anayi?
Zodziwika:
Gawo lopingasa la liwiro (v)x) = 2 m/s
Gawo loyima la liwiro (v)y) = 1.5 m/s
Nthawi yopuma (t) = masekondi 4
Akufuna: Kusuntha
Kusamutsa mavekta - mavuto ndi mayankho
1. Munthu amayenda kuchokera pa malo A kupita pa malo B, mamita 600 kumpoto; kenako kupita pa malo C, mamita 400 kumadzulo; kenako kupita pa malo D, mamita 200 kum'mwera; kenako amalize pa malo E, mamita 700 kum'mawa. Kodi kukula kwa malowo ndi kotani? kusamuka?
Yankho:
Zodziwika:
AF = AB – BF = AB – CD = 600 – 200 = 400 m
EF = DE – DF = DE – BC = 700 – 400 = 300 m
Kuwonjezera ma vector pogwiritsa ntchito zigawo - mavuto ndi mayankho
1. Ma vekitala atatu monga momwe zasonyezedwera pachithunzi chili pansipa.
V1 = 30
V2 = 30
V3 = 40
Kodi zotsatira zake ndi ziti? mavekitala.
Zodziwika:
V1 = 30, ngodya pakati pa V1 ndi x axis = 30o
Zithunzi za kayendedwe kolunjika - mavuto ndi mayankho
1. Mtunda wa graph (wolunjika) motsutsana ndi nthawi (yopingasa) monga momwe zasonyezedwera pachithunzi chili pansipa. Chinthu chomwe chili pamalo opumulira chikuwonetsedwa ndi nambala…
Yankho:
Nambala 3, yowonetsedwa ndi mzere wowongoka.
Liwiro lapakati - mavuto ndi mayankho
1. Winawake amazungulira bwalo lamakona anayi kutalika kwa mamita 400 ndi m'lifupi mwa mamita 100, nthawi 12 mu ola limodzi. Kodi ndi chiyani chomwe chimapangitsa kuti liwiro lapakati ndi liwiro lapakati?
Zodziwika:
Kutalika kwa rectangle = mamita 400
M'lifupi mwa rectangle = mamita 100
Kuzungulira kwa rectangle = (2 x 400 metres) + (2 x 100 metres) = 800 metres + 200 metres = 1000 metres
Mtunda = 12 x 1000 mamita = 12,000 mamita = 12 makilomita
27 Kuyenda kwa chipolopolo - mavuto ndi mayankho 1. Chipolopolo chimawomberedwa pa ngodya θ = 60o ndi liwiro la 20 m/s. Kuthamanga chifukwa cha mphamvu yokoka ndi 10 m/s2. Kodi nthawi yofikira kutalika kwakukulu ndi iti? Yodziwika: Liwiro loyambirira la chipolopolo (vo) = 20 m/s Ngongole (θ) = 60oC … Werengani zambiri
Mfundo yakuda - mavuto ndi mayankho
1. Madzi a magalamu 200 pa kutentha kwa 30°C osakanizidwa ndi madzi a magalamu 100 pa kutentha kwa 90°C. kutentha kwapadera ya madzi = 1 cal.gram-1° C-1Dziwani kutentha komaliza kwa chisakanizocho!
Zodziwika:
Misa ya madzi 2 (m1) = magalamu 200
Kutentha kwa madzi 1 (T)1= = 30oC
Unyinji wa madzi 2 (m2) = magalamu 100
Zinthu 10 Zogwirizana ndi chingwe pamwamba pa pulley Makina a Atwood - Mavuto ndi Mayankho
1. Bloko A yokhala ndi Unyinji ya makilogalamu 5, yoyikidwa pamalo osalala opingasa. Chipika B chokhala ndi kulemera kwa makilogalamu 3 chopachikidwa kumapeto kwa chingwe cholumikizidwa ndi chipika A pamwamba pa pulley. Kuthamanga chifukwa cha mphamvu yokoka ndi 10 m/s2Kodi ndi chiyani kuthamanga ya mabuloko onse awiri?
Zodziwika:
Kulemera kwa chipika A (mA) = 5 kg
Kulemera kwa chipika B (mB) = 3 kg
Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s2
Kuyenda mozungulira - mavuto ndi mayankho
1. Chinthu cholemera makilogalamu 10 chimayenda mozungulira pa liwiro losasintha la 4 m/s. Ngati utali wa bwalolo ndi mamita 0.5, ndiye kuti:
1) Kuchuluka kwa mabwalo ndi 4/π Hz
2) kuthamanga kwapakati ndi 32 ms-2
3) mphamvu yapakati ndi 320 N
4) Nthawi ndi 4π s.
Kodi mawu enieni ndi ati?