Kayan Motsin Kusurwa
Abin da yake yi motsi kai tsaye yana da ƙarfin kuzari wanda za'a iya ƙididdige shi ta amfani da dabarar:
p = mv
Bayani:
p = ƙarfin motsi (naúrar ƙasa da ƙasa ita ce kilogiram mita / daƙiƙa, an taƙaita ta a matsayin kg m/s)
m = nauyi (naúrar ƙasa da ƙasa kilogiram ne, a takaice kg)
v = gudu (naúrar ƙasa da ƙasa mita / daƙiƙa, an taƙaita ta m/s)
Adadin jiki a cikin motsi na juyawa wanda yayi daidai da taro (m) a cikin motsi madaidaiciya shine lokacin inertia (I). Adadin zahiri a cikin motsi na juyawa wanda yayi daidai da saurin (v) a cikin motsi madaidaiciya shine saurin kusurwaSaboda haka, abu a cikin juyawa yana da ƙarfin motsi wanda za'a iya ƙididdige shi ta amfani da dabarar:
Misalin matsalolin
1. Barkon yana da lokacin inertia na 2 kg m2 juyawa da saurin kusurwa na 2 rad/s. Kayyade motsin kusurwa na ƙwayar!
Tattaunawa
An sani :
Lokacin inertia na barbashi = 2 kg m2
Gudun kusurwa = 2 rad/s
An tambaya : ma'aunin kusurwa na ƙwayar cuta!
Jawab :
Tsarin dabara ƙarfin kusurwa :
2. Kwayar da nauyinta ya kai kilogiram 1 tana juyawa a gudun kusurwa na 2 rad/s. Radius na hanyar kwayar shine mita 2. Kayyade saurin kusurwar kwayar!
Tattaunawa
An san cewa:
Nauyin ƙwayoyin cuta (m) = 1 kg
Gudun kusurwa na barbashi = 2 rad/s
Radius na hanyar barbashi (r) = mita 2
An tambaya: Motsin kusurwa na barbashi?
Amsa:
3. Ƙwayar da ke da nauyin gram 0,5 tana aiki motsi na zagaye tare da saurin kusurwa mai ɗorewa na 2 rad s-1Idan radius na hanyar barbashi ya kai cm 10, to kusurwar barbashi shine...
A. 1 × 10-5 kg m2 /s
B. 2 × 10-5 kg m2 /s
C. 3 × 10-5 kg m2 /s
D. 4 × 10-5 kg m2 /s
E. 5 × 10-5 kg m2 /s
Tattaunawa:
Momentum na Kungular barbashi:
L = (0,5 x 10-5 kg m2)(2 rad/s) = 1 x 10-5 kg m2/s
