The radius vector and linear momentum are respectively given by vector 2 i ^ + 2 j ^ + k ^ and 2 i ^ - 2 j ^ + k ^ . Their angular momentum is

Angular momentum L → = r → × p → = 2 i ^ + 2 j ^ + k ^ × 2 i ^ - 2 j ^ + k ^ = 4 i ^ - 8 k ^

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Physics - Vectors Question with Solution | TestHub

PhysicsVectorsMultiplication of vectorsEasy2 minPYQ_2020

PhysicsEasysingle choice

The radius vector and linear momentum are respectively given by vector $2 \hat{i} + 2 \hat{j} + \hat{k}$ and $2 \hat{i} - 2 \hat{j} + \hat{k}$ . Their angular momentum is

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Answer:

Solution:

Angular momentum $\vec{L} = \vec{r} \times \vec{p}$

$= (2 \hat{i} + 2 \hat{j} + \hat{k}) \times (2 \hat{i} - 2 \hat{j} + \hat{k}) = 4 \hat{i} - 8 \hat{k}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:VectorsSubtopic:Multiplication of vectors

⏱ 2mℹ️ Source: PYQ_2020

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