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The angular momentum vecL =vecr xxvecp "...

The angular momentum `vecL =vecr xxvecp " where " vecr` is a position vector and `vecP` is linear momentum of a body.
If `vecr = 4veci + 6 vecj -3hatk and vecP =2veci +4vecj-5hatk, " final " vecL`

Text Solution

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`vecL =vecr xxvecp =|{:(hati,hatj,hatk),(4,6,-3),(2,4,-5):}|`
`:. vecL =(-30+12)hati+(-6+20)hatj+(16-12)veck`
`=-18hati + 14hatj+4hatk`.
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