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Q.

A particle of mass 1 kg is moving along the line y = x + 2 (here x and y are in m) with speed 2 m/s. The magnitude of angular momentum of the particle about origin is:

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a

4 kgm2s-1

b

22kgm2s-1

c

42 kgm2s-1

d

2 kgm2s-1

answer is B.

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Detailed Solution

Angular momentum of particle about origin O is:L = mvr1 = (1)(2)(2 cos 450) = 42 = 22 kgm2s-1
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