A particle of mass 20 g is released with an initial velocity 5 m/s along the curve from the point A, as shown in the figure. The point A is at height h from point B. The particle slides along the frictionless surface. When the particle reaches point B, its angular momentum about O will be : (Take g = 10 m/s2)
(1) 6 kg-m2/s
(2) 2 kg-m2/s
(3) 8 kg-m2/s
(4) 3 kg-m2/s
