Video: Dab tsi yuav tsum yog lub kaum sab xis ntawm ob vectors kom tau txais txiaj ntsig siab tshaj plaws?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Rau qhov tshwm sim ua siab kawg ,ob ob vectors yuav tsum ua tib yam. li no lub lub kaum sab xis ntawm lawv yuav tsum ua 0de.
Ib yam li ntawd, koj tuaj yeem nug, dab tsi yuav tsum yog lub kaum sab xis ntawm ob vectors rau lawv cov txiaj ntsig kom siab tshaj plaws?
Cov tshwm sim ntawm ob vector yog tsawg kawg thaum ob leeg cov duab yog sib npaug thiab nyob rau hauv opposite direction i.e.the lub kaum sab xis ntawm tus vector yog 180 degrees.
Ib sab saum toj, thaum qhov loj ntawm qhov tshwm sim ntawm ob vectors siab tshaj plaws? Magnitude ntawm Qhov tshwm sim ntawm ob vectors yog qhov siab tshaj plaws , thaum cov duab ua nyob rau hauv tib txoj kev thiab yog yam tsawg kawg nkaus thaum lawv ua nyob rau hauv opposite lus qhia.
Tom qab ntawd, lo lus nug yog, dab tsi yuav tsum yog lub kaum sab xis ntawm ob vectors A thiab B rau lawv cov txiaj ntsig yog qhov tsawg kawg nkaus?
|A - B | ≦ R ≦ | A + B |. Cov yam tsawg kawg nkaus tus nqi yog A - B . Thiab nws tshwm sim thaum lub ob vectors yog anti-parallel rau ib leeg ie lub lub kaum sab xis ntawm lawv yog 180 °. Tus nqi siab tshaj plaws yog A + B . Nws tshwm sim thaum lub ob vectors yog sib npaug sib npaug.
Qhov txiaj ntsig siab tshaj plaws ntawm ob vectors P thiab Q yog dab tsi?
Cov max tus nqi ntawm qhov loj ntawm Qhov tshwm sim ntawm obvectors P bar thiab Q bar yog 24 units & yam tsawg kawg nkaus ntawm lawv tshwm sim ua 4unit.
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