A bead of mass m = 6.90 kg is released from point A and slides on the frictionless track as shown in the figure below. The height of A is ha = 6.10 m. Point B height is 3.2 m above ground and point C is 2 m above ground.
(a) Determine the bead's speed at points B and C.
point B m/s
point C m/s
(b) Determine the net work done by the force of gravity in moving the bead from A to C.
J