Mafunso atatu okhudza equation yokhazikika ya Spring
1. Kasupe wopangidwa ndi free suspension ali ndi kutalika kwa 10 cm. Kumapeto kwa free suspension, kulemera kwa magalamu 200 kumapachikidwa kotero kuti kutalika kwa spring kumakhala 11 cm. Ngati g = 10 m/s 2 , kodi mphamvu ya spring ndi yotani?
Zodziwika:
Kutalika koyambirira kwa kasupe (y 1 ) = 10 cm = 0.10 m
Kutalika komaliza kwa kasupe (y 2 ) = 11 cm = 0.11 m
Kusintha kwa kutalika kwa masika (Δy) = 0.11 – 0.10 = 0.01 mamita
Kulemera kwa katundu (m) = 200 magalamu = 0.2 kg
Kulemera kwa katundu (w) = mg = (0,2)(10) = 2 Newtons
Kufunidwa: Chokhazikika cha masika (k)
yankho;
Fomula yokhazikika ya masika:
F = k Δy
k = F / Δy = 2 / 0,01 = 200 / 1 = 200 Newtons/mita
2. Kasupe akhoza kutambasulidwa kuti atalikitsidwe ndi masentimita 10 ndi mphamvu ya 0.5 Joule. Kodi kasupe wokhazikika ndi chiyani?
Zodziwika:
Kuwonjezera kutalika kwa kasupe (Δy) = 10 cm = 0.1 mita
Mphamvu ya masika (EP) = 0.5 Joules
Kufunidwa: Chokhazikika cha masika (k)
yankho;
Chiŵerengero cha masika chimawerengedwa pogwiritsa ntchito fomula ya Spring Potential Energy:
EP = ½ k Δy 2
2 EP = k Δy 2
2 (0,5) = k (0,1) 2
1 = k (0,01)
k = 1 / 0,01 = 100 / 1 = 100 Newtons/mita
3. Kasupe wokokedwa ndi mphamvu ya 100 N umawonjezera kutalika kwake ndi 5 cm. Werengani kasupe wokhazikika.
Zodziwika:
Mphamvu (F) = 100 N
Kuwonjezeka kwa kutalika kwa masika (Δx) = 5 cm = 0.05 m
Kufunidwa: Chokhazikika cha masika (k)
yankho;
F = k Δx
k = F / Δx = 100 / 0,05 = 10.000 / 5 = 2000 Newtons/mita
