Mienzaniso mishanu yemibvunzo pamusoro pesimba re elastic potential re springs
1. Chitubu chinorema 2 kg uye chinoturikwa chakamira pachigadziko. Kana chitubu chikareba ne4 cm, zvinoreva kuti shanduko yacho inoonekwa simba rinogona kuwanikwa Simba rinopfava rechitubu ndiro… g = 10 m/s2
Kukurukurirana
Zvinozivikanwa :
Huremu hwemutoro (m) = 2 kg
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s2
Kurema kwemutoro (w) = mg = (2)(10) = 20 Newton
Kuwedzera kwehurefu hwechitubu (x) = 4 cm = 0,04 metres
Akabvunzwa : Simba rinoita kuti chitubu chive chakasimba
Jawab :
Fomura Mutemo waHooke ndiF = kx, apo F = simba, k = chitubu chisingachinji uye x = kuwedzera kwehurefu hwechitubu. Kana zvikagadziriswa kuti zvienderane nedambudziko iri, fomura yemutemo waHooke inochinjwa kuita w = kx, apo w = giravhitiKuti uverenge chinoramba chiripo chechirimo, chinja fomura yemutemo yaHooke kuita k = w / x. Saka chiramba chiripo chechirimo ndi k = w / x = 20 / 0,04 = 500 Newton/mita.
Kuchinja kwesimba re elastic potential remuchirimo ndekwekuti:
EP = ½ kx2 = ½ (500)(0,04)2 = (250)(0,0016) = 0,4 Joule
Kuchinja kwesimba re elastic potential re spring kunogonawo kuverengerwa uchishandisa fomura imwe chete:
EP = ½ kx2 = ½ (w / x) x2 = ½ wx = ½ mgx
Tsananguro: w = simba rehuremu hwemutoro, m = huremu hwemutoro, x = kuchinja kwehurefu hwechitubu.
EP = ½ (2)(10)(0,04) = (10)(0,04) = 0,4 Joules.
2. Kuti chitubu chitambanudzwe kusvika 10 cm, simba re50 N rinodiwa. Simba re elastic potential rinodiwa kuti chitubu chitambanudzwe kusvika 12 cm…
Kukurukurirana
Zvinozivikanwa :
Kuwedzera kwehurefu hwechitubu (x) = 10 cm = 0,1 metres
Simba (F) = 50 Newtons
Akabvunzwa : simba rinoita kuti chitubu chiwedzere kusvika pa 12 cm kana 0,12 metres.
Jawab :
Chitubu chinoramba chiripo ndechekuti:
k = F / x = 50 / 0,1 = 500 Newtons/mita
Chitubu chakashandiswa chakafanana, saka chisimbiso chemuchirimo chakawanikwa mukuverenga kwapfuura chinoshandiswa kuverenga simba re elastic potential rechitubu kuti chisimudze chitubu nemamita 0,12.
EP = ½ kx2 = ½ (500)(0,12)2 = (250)(0,0144) = 3,6 Joules.
3. Girafu iri pazasi rinoratidza hukama huripo pakati pesimba (F) nekuwedzera kwehurefu hwechitubu (x). Kana chitubu chikakanganiswa ne10 cm, saka simba re elastic potential rechitubu…
Kukurukurirana
Zvinozivikanwa :
Simba (F) = 5 Newtons
Kuwedzera kwehurefu hwechitubu (x) = 2 cm = 0,02 metres
Akabvunzwa : simba rinogona kuwanikwa muchitubu kana chitubu chakakanganiswa ne 10 cm kana 0,1 metres.
Jawab :
Chirimo chinogara chiripo:
k = F / x = 5 / 0,02 = 250 Newtons/mita
Simba rinogona kuwanikwa muchitubu kana chitubu chikakanganiswa nemamita 0,1:
EP = ½ kx2 = ½ (250)(0,1)2 = (125)(0,01) = 1,25 Joules.
Simba Rinogona Kuvharika
4. Chitubu chinorema 2 kg sezvinoratidzwa mumufananidzo unotevera. Kana chitubu chikawedzera kureba kwemasendimita mashanu uye kukurumidza nekuda kwegiravhiti pasi 10 ms-2, ipapo simba re elastic potential remuchitubu...
A. 4,0 J
B. 3,0 J
C. 2,5 J
D. 1,0 J
E. 0,5 J
Kukurukurirana
Zvinozivikanwa :
Kuwedzera kureba (Δx) = 5 cm = 0,05 metres
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s2
Huremu hwemutoro (m) = 2 kg
Kurema kwemutoro (w) = mg = (2)(10) = 20 Newton
Akabvunzwa : Simba rinogona kuwanikwa nerabha?
Jawab :
Kutanga, verenga chisipiti che elastic constant uchishandisa fomura yemutemo yaHooke:
k = w / Δx = 20 / 0,05 = 400 N/m
Simba rinoita kuti chitubu chishande zvakanaka nderekuti:
EP = ½ k Δx2 = ½ (400)(0,05)2 = (200)(0,0025)
EP = 0,5 Joule
Mhinduro chaiyo ndiE.
5. Kuti chitubu chitambanudzwe kusvika 5 cm, simba re20 N rinodiwa. Simba rinogona kushandiswa nechitubu kana chikatambanudzwa kusvika 10 cm…
A. 2 Joule
B. 4 Joule
C. 20 Joule
D. 50 Joule
E. 100 Joules
Kukurukurirana
Zvinozivikanwa :
Kuwedzera kureba (Δx) = 5 cm = 0,05 metres
Simba (F) = 20 Newtons
Akabvunzwa : EP yechitubu apo chitubu chinotambanudzwa 10 cm?
Jawab :
Chirimo chinogara chiripo:
k = F / Δx = 20 / 0,05 = 400 N/m
Simba rinogona kuwanikwa muchirimo kana Δx = 10 cm = 0,1 metres:
EP = ½ k Δx2 = ½ (400)(0,1)2 = (200)(0,01)
EP = 2 Joule
Mhinduro chaiyo ndiA.
