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 z-axis

38 units along x-axis

38 units along y-axis

38 units along z-axis

Text Solution

Verified by Experts

The correct Answer is:

`vec(P)=mvec(v)xxvec(r)=1(5hat(i)-6hat(j))xx(3hat(i)+4hat(j))=38hat(k)`

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