Zitsanzo 4 za makonzedwe a masika otsatizana
1. Masipulogalamu asanu, aliwonse okhala ndi mphamvu yokhazikika ya 200 N/m, amakonzedwa motsatizana. Sipulogalamu yofanana ya masipulogalamu a masipulogalamu ndi…
Zokambirana
Amadziwika kuti:
Chokhazikika cha masika aliwonse (k)1 = k2 = k3 = k4 = k5) = 200 N/m
Yafunsidwa: chosinthira chokhazikika cha kasupe (k)
Yankho:
Chokhazikika cha masika chosinthira :
1/k = 1/k1 + 1/k2 + 1/k3 + 1/k4 + 1/k5
1/k = 1/200 + 1/200 + 1/200 + 1/200 + 1/200
1/k = 5/200
k = 200/5
k = 40 Newton/mita
2. Masipu awiri akonzedwa monga momwe zasonyezedwera pansipa. Masipu aliwonse ali ndi k yosasintha1 = 200 N/m ndi k2 = 300 N/m. Kulemera kwa 2 kg kumayimitsidwa kuchokera ku kasupe. Ngati kuthamanga chifukwa cha mphamvu yokoka kuli 10 m/s2 ndiye kuti kutalika kwa msonkhano wa masika kuli...
Zokambirana
Amadziwika kuti:
Chokhazikika cha masika 1 (k)1) = 200 N/m
Chokhazikika cha masika 2 (k)2) = 300 N/m
Kulemera kwa katundu (m) = 2 kg
Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s2
Mphamvu yolemera (w) = mg = (2)(10) = 20 Newtons
Anafunsa: kukweza kutalika makonzedwe a mndandanda wa masika (x)
Yankho:
Chokhazikika cha masika chosinthira :
1/k = 1/k1 + 1/k2
1/k = 1/200 + 1/300 = 3/600 + 2/600 = 5/600
k = 600/5
k = 120 Newton/mita
Kuwonjezeka kwa kutalika kwa msonkhano wa masika :
x = F / k = w / k
x = 20 / 120
x = 1/6 mita
Kuwonjezeka kwa kutalika kwa dongosolo la kasupe ndiko kuwonjezeka kwa kutalika konse kwa akasupe atatu.
3. Masipule atatu ofanana akonzedwa monga momwe tawonetsera pansipa. Kulemera kwa 15-newton kumalumikizidwa kumapeto kwa masipule, zomwe zimapangitsa kuti makina a masipule atalikire ndi 5 cm. Chigawo chokhazikika cha masipule chilichonse ndi…
Zokambirana
Amadziwika kuti:
Mphamvu yolemera (w) = 15 Newtons
Kuwonjezeka kwa kutalika kwa msonkhano wa masika = 5 cm = 0,05 mamita
Anafunsa: nthawi zonse ya masika aliwonse
Yankho:
Hitung kchokhazikika cha kasupe chosinthira pogwiritsa ntchito fomula Lamulo la Hooke :
k = F / x = w / x
k = 15 / 0,05
k = 300 Newton/mita
Chokhazikika cha masika aliwonse :
1/k = 1/k1 + 1/k2 + 1/k3
1/300 = 1/k + 1/k + 1/k
1/300 = 3/k
k = (3)(300)
k = 900 ndi
k = 900 N/m
Masipu a masika atatuwa ndi ofanana kotero ali ndi ma constant omwewo. Constant ya masika 1 (k)1) = nthawi yokhazikika ya masika 2 (k2) = nthawi yokhazikika ya masika 3 (k3) = 900 Newton/mita
4. Masipu atatu aliwonse okhala ndi chokhazikika k yokonzedwa motsatizana. Chokhazikika cha masika chophatikizidwa ndi…
A. 1/5 k
B. 1/4 k
C. 1/3 k
D. 1/2 k
E. k
Kukambirana:
Fomula yokhazikika ya masika yokonzekera mndandanda :
1/pp = 1/k + 1/k + 1/k
Chokhazikika cha masika chophatikizidwa :
1/pp = 3/k
kp = k/3 = 1/3 k
Yankho lolondola ndi C.
