A unit mass at position vector vecr=(3ha...

A unit mass at position vector `vecr=(3hati+hatj)` is moving with velocity `vecv=(5hati-6hatj)`. What is the angular momentum of the body about the origin?

`2` units along the `z`-axis

`38` units along the `x`-axis

`38` units along the `y`-axis

`38` units along the `z`-axis

Text Solution

Verified by Experts

`vecl=vecrxxvecp=` `|[hati,hatj,hatk],[3,4,0],[5,-6,0]|` `=-38hatk`

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