A particle is moving along a straight line parallel to x axis with constant velocity find angular momentum about the origin in vector form
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A particle is moving along a straight line parallel to x axis with constant velocity find angular momentum about the origin in vector form
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Option (2) -mvbk^
Here position vector ( r^ ) = bj^...(1)
Mass of the body = m
Velocity of the body ( V^ ) = vi^.....(2)
We know that,
Angular momentum = m(r^×V^)
From (1) and (2)
Angular momentum = m(bj^×vi^)
Angular momentum = -mbvk^
We must know :
• l × j = k
• j × i = -k
Hence, the correct option is 2) -mbvk^