A bead of mass m = 3.10 kg is released from point A and slides on the frictionless track as shown in the figure below. The height of A is ha = 6.70 m.
(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