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A 2 kg particle moves at 3 m/s along a line 4 m from point O. Its angular momentum about O is
A12 kg m^2/s
B24 kg m^2/s
C6 kg m^2/s
D1.5 kg m^2/s
Answer & Solution
Correct answer: B. 24 kg m^2/s
l = m v r_perp = 2 x 3 x 4 = 24 kg m^2/s.
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