# 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) (a) 8kg - m2/s (b) 6kg - m2/s (c) 3kg - m2/s (d) 2kg - m2/s

## Question ID - 50725 :- 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) (a) 8kg - m2/s (b) 6kg - m2/s (c) 3kg - m2/s (d) 2kg - m2/s

3537

Work Energy Theorem from A to B

mgh =  m    −  mv

2gh =  −

2×10×10=  −52

L0= m r

= 20×10−3×20

L0 = 6 kg.m2/s

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