Mea Momentum Angular
ʻO ka mea e hana ana neʻe pololei Loaʻa iā ia ka momentum hiki ke helu ʻia me ka hoʻohana ʻana i ke ʻano hana:
p = mv
ʻIkepili:
p = momentum (ʻo ke anakahi honua he kilokani mika / kekona, i hoʻopōkole ʻia kg m/s)
m = ka nuipa (ʻo ke anawaena honua he kilokani, i hoʻopōkole ʻia kg)
v = ka wikiwiki (ʻo ke anawaena honua he mika / kekona, i hoʻopōkole ʻia m/s)
ʻO ka nui kino i ka neʻe wili e like me ka nuipa (m) i ka neʻe pololei ʻana manawa o ka inertia (I). ʻO ka nui kino i ka neʻe ʻana o ka wili e like me ka wikiwiki (v) i ka neʻe pololei ʻana, ʻo ia ka wikiwiki kihiNo laila, he momentum ko kahi mea e wili ana i hiki ke helu ʻia me ka hoʻohana ʻana i ke ʻano hana:
Laʻana pilikia
1. He 2 kg m ka manawa o ka inertia o ka ʻāpana2 e wili ana me ka wikiwiki angular o 2 rad/s. E hoʻoholo i ka momentum angular o ka ʻāpana!
Pahana
Ua ʻike ʻia :
Manawa o ka inertia o ka ʻāpana = 2 kg m2
Ka wikiwiki kihi = 2 rad/s
Ua nīnau ʻia : ka momentum kihi o ka ʻāpana!
Pane :
Haʻilula ka ikaika kihi :
2. Ke wili nei kahi ʻāpana me ke kaumaha o 1 kg i ka wikiwiki angular o 2 rad/s. ʻO ka radius o ke ala o ka ʻāpana he 2 mika. E hoʻoholo i ka momentum angular o ka ʻāpana!
Pahana
Ua ʻike ʻia:
Ka nuipaʻa o ka ʻāpana (m) = 1 kg
Ka wikiwiki kihi o ka ʻāpana = 2 rad/s
ʻO ke anawaena o ke ala ʻāpana (r) = 2 mika
Nīnau ʻia: Ka momentum angular o ka ʻāpana?
Pane:
3. Hana kahi ʻāpana me ke kaumaha o 0,5 grams neʻe pōʻai me ka wikiwiki angular mau o 2 rad s-1Inā he 10 kenimika ke anawaena o ke ala o ka ʻāpana, a laila ʻo ka momentum angular o ka ʻāpana...
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
Kūkākūkā:
Ka Momentum Huina nā ʻāpana:
L = (0,5 x 10-5 kg m2)(2 rad/s) = 1 x 10-5 kg m2/s
