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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?

A

2 units along z-axis

B

38 units along x-axis

C

38 units along y-axis

D

38 units along z-axis

Text Solution

Verified by Experts

The correct Answer is:
D
`vec(P) = m vec(v) xx vec(r) = 1(5 hat(i)- 6 hat(j)) xx (3 hat(i) + 4hat(j))= 38 hat(k)`
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