A small, 4.5-kg brick is released from rest 2.00 m above a horizontal seesaw on a fulcrum at its center, as shown in the figure below (Figure 1). Find the angular momentum of this brick about a horizontal axis through the fulcrum and perpendicular to the plane of the figure the instant the brick is released.
Express your answer in kilogram-meters squared per second.
Find the angular momentum of this brick about a horizontal axis through the fulcrum and perpendicular to the plane of the figure the instant before it strikes the seesaw.
Express your answer in kilogram-meters squared per second.