1. Girafu yesimba (F) ichienzaniswa nekureba (x ) inoratidzwa mumufananidzo uri pazasi. Tsvaga chinoramba chiripo chechitubu!
mhinduro
k = F / x
F = simba (Newton)
k = chitubu chisingachinji (Newton/mita)
x = kuchinja kwehurefu (mamita)
Chirimo chinogara kwenguva refu:
k = 10 / 0.02 = 20 / 0.04
k = 500 N/m
2. Sarudza chinoramba chiripo chechirimo.
mhinduro
Chirimo chinogara kwenguva refu:
k = F / x
k = 5 / 0.01 = 10 / 0.02 = 15 / 0.03 = 20 / 0.04
k = 500 N/m
3. Chitubu A chine hurefu hwepakutanga hwe60 cm uye chitubu B chine hurefu hwepakutanga hwe90 cm. Chitubu A chine hurefu hwe100 N/m, chitubu B chine hurefu hwe200 N/m. Chiyero chekuchinja kwehurefu hwechitubu A nekuchinja kwehurefu hwechitubu B ndeche…
Zvinozivikanwa:
Chimiro chenguva dzose chechirimo A (k A ) = 100 N/m
Chimiro chenguva dzose chechirimo B (k B ) = 200 N/m
Simba pachitubu A (F A ) = F
Simba pachitubu B (F B ) = F
Zvaidiwa: Δl A : Δl B
Solution:
Fomura yemutemo waHooke:
Δl = F / k
Δl = kuchinja kwehurefu, F = simba, k = nguva dzose
Kuchinja kwehurefu hwechitubu A:
Δl A = F A / k A = F / 100
Kuchinja kwehurefu hwechitubu B:
Δl B = F B / k B = F / 200
Chiyero chekuchinja kwehurefu hwechitubu A nekuchinja kwehurefu hwechitubu B:
Δl A : Δl B
F/100 : F/200
1/100: 1/200
1/1: 1/2
2: 1
4. Tambo yenylon ine urefu hwepakutanga hwemasendimita makumi maviri, inodhonzwa nesimba re10 N. Kuchinja kwehurefu hwetambo i2 cm. Sarudza hukuru hwesimba kana kuchinja kwehurefu kuri 6 cm.
Zvinozivikanwa:
Simba (F) = 10 N
Kuchinja kwehurefu ( Δl ) = 2 cm = 0.02 m
Zvinodiwa: hukuru hwesimba (F) kana Δl = 0.06 m.
Solution:
Nguva dzose:
k = F / Δl
k = 10 / 0.02 = 500 N/m
Hukuru hwesimba (F) kana Δl = 0.06 m :
F = kx
F = (500)(0.06)
F = 30N
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