A particle of mass m = 3.0 kg is released from rest in position A and then slides down the smooth vertical-plane track. Determine its angular momentum (positive if counterclockwise, negative if clockwise) about both points A and D(a) as it passes position B and (b) as it passes position C. Answers: (a) As it passes B, HA = kg⋅m2/s, HD = kg⋅m2/s (b) As it passes C, HA = kg⋅m2 /s, HD = kg⋅m2/s
